JP6519609B2 - Wiper for vehicle - Google Patents

Description

  The present invention relates to a vehicle wiper device provided with a nozzle for injecting a cleaning solution.

  Some wiper devices for vehicles supply (spray) cleaning liquid from the washer nozzle attached to the wiper arm to the front side in the direction of wiping movement of the wiper blade (see, for example, Patent Document 1 below). Thus, the cleaning liquid can be efficiently supplied to the wiping surface of the windshield glass.

JP, 2002-308064, A

  However, in the above-mentioned wiper device for vehicles, there is a possibility that the cleaning fluid supplied (sprayed) from the washer nozzle can not reach the predetermined position by the air flow flowing between the wiper arm and the wiper blade. Further, when the wiper blade is disposed on the front side in the wiping advancing direction with respect to the wiper arm, it is necessary to cause the cleaning liquid to contact the wiping surface so as to exceed the wiper blade. For this reason, if the cleaning fluid temporarily interferes with the wiper blade without exceeding the wiper blade due to the air flow, the cleaning fluid may be scattered.

  An object of the present invention is to provide a vehicle wiper device capable of accurately supplying the cleaning liquid to the front side in the wiping advancing direction of the wiper blade in consideration of the above-mentioned fact.

The wiper apparatus for a vehicle according to the present invention is connected to a wiper arm that is reciprocally rotated between a stop position and a reverse position, and a tip end side of the wiper arm, and the rotational direction from the stop position along with the reciprocal rotation of the wiper arm. A wiper blade which is pivoted to one side and is pivoted to the other side in the pivoting direction from the reverse position to wipe the wiping surface, and is provided on the proximal end side of a connecting portion of the wiper arm to the wiper blade. And a stay extending from the wiper arm toward the wiper blade and having a pair of opposed wall portions disposed to face each other so as to sandwich the wiper blade in the width direction of the wiper blade. supplying a cleaning liquid to the side of the rotational direction one side of the wiper blade ejection hole provided at an end of the wiping surface side of one of the pair of opposing walls That a first nozzle, a second nozzle for supplying a cleaning liquid to the side of the rotational direction the other side of the pair of opposing wall portions other said wiping surface side jet holes in the end portion is provided with in the wiper blade And one end of a first hose routed to the wiper arm is connected to the first nozzle, and a second hose routed to the wiper arm is connected to the second nozzle. One end is connected.

  According to the wiper apparatus for vehicles of the said structure, the wiper blade is connected with the front end side of the wiper arm. Accordingly, the wiper blade is reciprocated between the stop position and the reverse position as the wiper arm reciprocates. The direction from the stop position to the reverse position when the wiper blade reciprocates back and forth is one side in the rotation direction, and the direction from the reverse position to the stop position is the other side in the rotation direction.

On the other hand, a stay having a pair of opposing wall portions is provided on the wiper arm on the proximal end side of the connecting portion with the wiper blade, and the stay extends from the wiper arm to the wiper blade side. The stay has a pair of opposing wall portions disposed opposite to sandwich the wiper blade in the width direction of the wiper blade . As a result, when the wiper blade reciprocates, it is possible to suppress or prevent the swing (vibration) of the wiper blade to one side in the rotational direction and the other side in the rotational direction.

  Here, the stay is provided with a first nozzle and a second nozzle, and one end of a hose arranged on the wiper arm is connected to the first nozzle and the second nozzle. Then, the cleaning liquid is supplied by the first nozzle and the second nozzle to one side of the wiper blade in the rotational direction and the other side of the wiper blade in the rotational direction. Therefore, by utilizing the stay, for example, the injection holes of the first nozzle and the second nozzle can be arranged on the side of the wiper blade. Therefore, the influence of the air flow on the cleaning liquid supplied (sprayed) from the first nozzle and the second nozzle can be reduced. As a result, when the wiper blade is rotated from the stop position to one side in the rotational direction, the cleaning fluid is supplied to the one side in the rotational direction of the wiper blade by the first nozzle. The cleaning solution can be accurately supplied to the front side.

  In addition, since the stay is provided on the proximal end side of the wiper arm in relation to the connection portion with the wiper blade, the cleaning liquid can be accurately supplied to the forward side in the wiping direction with respect to the wiper arm proximal end portion. .

Further, in the vehicle wiper device according to the present invention, the wiper blade disperses the pressing force from the wiper arm in the longitudinal direction, a blade rubber having a wiping portion for wiping the wiping surface and a base of an upper portion of the wiping portion. includes a backing, and a holding case for holding the backing and the base of the blade rubber in the longitudinal direction, before Symbol wiper blade, in a state in which the backing between the tips of the pair of opposing walls is present, the It is arrange | positioned between a pair of opposing wall parts.

Further, in the vehicle wiper apparatus of the present invention, the wiper blade, wherein the wiping portion of the blade rubber is held by the pair of opposing walls of the holding case located on the wiping surface side than the tip ing.

  Further, in the wiper apparatus for a vehicle according to the present invention, when the stay is viewed from the longitudinal direction of the wiper blade, the distance between the pair of opposing wall portions is the widthwise dimension of the portion of the holding case where the backing is held. It has a larger interval.

  Further, in the wiper apparatus for a vehicle according to the present invention, the pair of opposing wall portions are disposed offset to one side in the rotational direction with respect to the wiper arm when viewed from the direction orthogonal to the wiping surface The ejection port of the first nozzle is located on the side opposite to the wiper arm with respect to the wiper blade.

  According to the wiper apparatus for a vehicle having the above configuration, the pair of opposing wall portions of the stay is offset to the one side in the rotational direction with respect to the wiper arm when viewed from the direction orthogonal to the wiping surface. The stay can be arranged corresponding to the wiper blade arranged to be offset to one side in the rotational direction with respect to the wiper arm.

  Further, since the jet holes for jetting the cleaning liquid in the nozzle are formed in the pair of opposing wall portions of the stay, the jet holes are disposed laterally of the wiper blade, which is disposed offset to one side in the rotational direction with respect to the wiper arm. To supply the cleaning solution to the side of the wiper blade from the injection hole.

The wiper apparatus for a vehicle according to the present invention includes a wiper arm that is reciprocally rotated between a stop position and a reverse position, and the wiper arm that is connected to the tip end side of the wiper arm and viewed from a direction orthogonal to the wiping surface. A wiper blade which is disposed so as to overlap, is rotated from the stop position to one side in the rotational direction as the wiper arm reciprocates, and rotates from the reverse position to the other side in the rotational direction to wipe the wiping surface The wiper arm is provided on a proximal end side of a connecting portion with the wiper blade, extends from the wiper arm toward the wiper blade, and is disposed so as to sandwich the wiper blade in the width direction of the wiper blade. And a stay having a pair of nozzle walls, wherein the stay is jetted to an end on the wiping surface side of one of the pair of nozzle walls. A first nozzle for supplying a cleaning solution to the side of the wiper blade on one side in the rotational direction, and an ejection hole is provided at an end of the other of the pair of nozzle walls on the wiping surface side And a second nozzle for supplying a cleaning liquid to the side of the other side of the rotating direction of the wiper blade, and one end of a first hose arranged on the wiper arm is connected to the first nozzle The second nozzle is connected to one end of a second hose disposed on the wiper arm.
Further, in the wiper apparatus for a vehicle according to the present invention, the first nozzle has a communication passage communicating with the connecting portion to which one end of the first hose is connected, and one of the pair of opposing wall portions is The first nozzle has a first branch passage branched from the communication passage of the first nozzle and communicating with the ejection hole of the first nozzle, and the second nozzle is connected to one end of the second hose. A second branch that branches from the communication passage of the second nozzle and communicates with the ejection hole of the second nozzle. It has a road.
Further, in the wiper apparatus for a vehicle according to the present invention, the first nozzle has a communication passage communicating with the connecting portion to which one end of the first hose is connected, and one of the pair of nozzle walls is The first nozzle has a first branch passage branched from the communication passage of the first nozzle and communicating with the ejection hole of the first nozzle, and the second nozzle is connected to one end of the second hose. A communication passage communicating with the connection portion is provided, and the other of the pair of nozzle walls is branched from the communication passage of the second nozzle to form a second branch passage communicating with the ejection hole of the second nozzle. Have.

It is sectional drawing (1-1 line sectional drawing of FIG. 3) seen from the longitudinal direction of the wiper arm which shows the principal part of the wiper apparatus for vehicles which concerns on 1st Embodiment. It is the top view seen from the outside of the wiping surface which shows the whole of the wiper device for vehicles concerning a 1st embodiment. FIG. 3 is a perspective view showing the wiper blade shown in FIG. 2 connected to the wiper arm. It is the reverse view seen from the inside of the wiping surface which shows the wiper arm shown by FIG. It is a circuit diagram which shows the electric constitution of the wiper apparatus for vehicles shown by FIG. It is a timing chart which shows the change timing of the wiper device for vehicles shown in FIG. (A) is a top view corresponding to FIG. 2 which shows the state in the middle of the wiper blade shown by FIG. 2 being rotated by one side in the rotation direction, (B) is a wiper shown by FIG. FIG. 7 is a plan view corresponding to FIG. 2 showing a state in which the blade is being rotated to the other side in the rotation direction. FIG. 8 is a cross-sectional view (cross-sectional view taken along line 8-8 in FIG. 9) of a wiper arm showing a main part of a vehicle wiper device according to a second embodiment, as viewed from the longitudinal direction of the wiper arm. It is the reverse view seen from the inside of the wiping surface which shows the wiper arm shown by FIG.

(Aspect of the first embodiment)

  The vehicle wiper device 10 according to the first embodiment will be described below with reference to FIGS. 1 to 7. As shown in FIG. 2, the vehicle wiper device 10 includes a substantially long wiper arm 12, a wiper blade 30 for wiping a windshield glass WG of a vehicle (car), and vibration (vibration) of the wiper blade 30. It is comprised including the stay 70 to suppress. Further, the vehicle wiper device 10 includes a first main nozzle 50 and a second main nozzle 60 provided at the front end of the wiper arm 12 and a first sub nozzle 80 as a "first nozzle" provided at the stay 70 (FIG. 4). And the second sub-nozzle 90 (see FIG. 4) as “the second nozzle”. Each component will be described below.

(About the wiper arm 12)

  As shown in FIG. 2, the wiper arm 12 includes an arm head 14 constituting a proximal end portion of the wiper arm 12, a retainer 18 constituting a longitudinal intermediate portion of the wiper arm 12, and an arm piece constituting a distal end portion of the wiper arm 12. 20 and the arm side connection member 22 are comprised.

  The arm head 14 is formed in a substantially rectangular columnar shape, and is made of, for example, aluminum die cast. A fixed portion 16 is formed at the base end of the arm head 14, and a distal end portion of a substantially cylindrical pivot shaft 17 is fastened and fixed to the fixed portion 16. The pivot shaft 17 is rotatably supported by a pivot holder (not shown) fixed to a vehicle frame or the like, and is connected to the wiper motor WM (see FIG. 5) via a link mechanism. Then, the pivot shaft 17 is reciprocated by the driving force of the wiper motor WM, whereby the wiper arm 12 reciprocates between the stop position (the position shown in FIG. 2) and the reverse position (see the dashed line in FIG. 2). It is supposed to rotate. The direction from the stop position to the reverse position (arrow A direction in FIG. 2) is one side of the turning direction, and the direction from the reverse position to the stop position (arrow B direction in FIG. 2) is It is the other side in the turning direction.

  As also shown in FIG. 3, the retainer 18 is formed in a substantially elongated shape, and on the side of the windshield glass WG of the vehicle (in the direction of the arrow F in FIG. 3) as viewed from the longitudinal direction. It has an open, substantially U-shape. The proximal end of the retainer 18 is rotatably supported at the distal end of the arm head 14 with the width direction of the retainer 18 as the axial direction, and the retainer 18 is from the distal end of the arm head 14 to the distal end side of the wiper arm 12 It extends. Further, a biasing member (not shown) such as a tension coil spring is bridged between the retainer 18 (or the arm piece 20) and the arm head 14, and the retainer 18 is a windshield glass WG by the biasing member. It is biased to the side.

  The arm piece 20 is formed in a long rod-like shape having a substantially rectangular cross section. The proximal end of the arm piece 20 is crimped to the distal end of the retainer 18, and the arm piece 20 extends from the distal end of the retainer 18 to the distal end of the wiper arm 12.

  The arm side connecting member 22 is formed in a substantially elongated shape having a substantially U-shaped cross section opened to the windshield glass WG side, and the base end of the arm side connecting member 22 is the tip end of the arm piece 20. It is fixed to caulking. As shown in FIG. 3, a fixing groove 22A for fixing a clip 48 described later is formed on the side wall of the tip of the arm side connecting member 22 (in FIG. 3, one fixing groove 22A The fixing groove 22A is opened to the tip side of the arm side connecting member 22. Further, a substantially rectangular fixing hole 22B for fixing a clip 48, which will be described later, is formed through the upper wall of the tip end portion of the arm side connecting member 22 so as to pass therethrough.

  Furthermore, as shown in FIG. 2, when viewed in the direction orthogonal to the wiping surface S of the windshield glass WG, the longitudinal middle portion of the arm side connecting member 22 is bent in a substantially crank shape, The distal end portion of the side connecting member 22 is disposed closer to the one side in the rotational direction of the wiper arm 12 than the proximal end portion of the arm side connecting member 22.

(About the wiper blade 30)

  As shown in FIG. 2 and FIG. 3, the wiper blade 30 is formed in a substantially elongated shape and arranged in line with the wiper arm 12 in the longitudinal direction, and the longitudinal central portion of the wiper blade 30 is described later. The connecting lever 46 is connected to the tip of the arm-side connecting member 22 of the wiper arm 12 via the connecting lever 46. Thus, the wiper blade 30 is disposed on one side in the rotational direction with respect to the wiper arm 12 (the portion excluding the arm side connecting member 22) when viewed from the direction orthogonal to the wiping surface S.

  As shown in FIG. 1, the wiper blade 30 holds a blade rubber 32 for wiping the wiping surface S of the windshield glass WG, a backing 40 for dispersing the pressing force from the wiper arm 12, and a holding case for holding the blade rubber 32. And 42 are configured.

  The blade rubber 32 is formed in a substantially elongated shape. Further, the upper portion (portion opposite to the windshield glass WG) in the blade rubber 32 is a base 34, and the width direction outer side (arrow A direction and arrow B in FIG. 1) of the blade rubber 32 A pair of grooves 34A open in the direction) is formed. Thus, the base portion 34 is formed in a substantially H-shaped cross section opened outward in the width direction of the blade rubber 32.

  Further, the blade rubber 32 includes a wiping unit 36, and the wiping unit 36 is provided on the lower side (the windshield glass WG side) with respect to the base 34. The wiping portion 36 is formed in a substantially triangular shape in cross section, and the width dimension of the wiping portion 36 is set to be smaller toward the windshield glass WG side. And the width direction center part in the upper part of the wiping part 36 is joined with the width direction center part of the base 34 by the connection part 38 of a substantially rectangular plate shape. Further, a lip 36A for wiping the wiping surface S of the windshield glass WG is formed at the tip (lower end) of the wiping portion 36, and the lip 36A has a constant width dimension and the widthwise center of the wiping portion 36 It projects from the part to the windshield glass WG side.

  The backing 40 is formed of a spring plate material and formed in a substantially long plate shape. The backing 40 is disposed on the upper surface of the base 34 with the thickness direction being in the vertical direction (direction orthogonal to the wiping surface S). In the natural state, the backing 40 is slightly curved so that the longitudinal central portion is convex to the opposite side to the windshield glass WG. The blade rubber 32 follows the wiping surface S of the windshield glass WG by the spring force of the backing 40, and the pressing force from the wiper arm 12 is dispersed in the longitudinal direction of the blade rubber 32.

  The holding case 42 is formed in a long shape. Further, the cross-sectional shape in the longitudinal direction of the holding case 42 is substantially uniform, and the holding case 42 has a flat, substantially C-shape open to the windshield glass WG side in a cross-sectional view as viewed from the longitudinal direction. In addition, the holding case 42 is disposed so that the open ends thereof abut each other, and holds the base 34 and the backing 40 of the blade rubber 32. Specifically, in a side sectional view, the upper portion of the base 34 and the backing 40 are disposed in the holding case 42, and the open end of the holding case 42 is engaged in the groove 34 A of the base 34. Thus, the upper portions of the backing 40 and the base 34 are held by the holding case 42 in a state of being covered by the holding case 42.

  Further, a fin 44 is integrally formed on the holding case 42, and the fin 44 protrudes upward from the holding case 42. The upper surface 44A of the fin 44 is inclined in a direction away from the windshield glass WG as it goes to one side in the rotational direction in the width direction of the holding case 42 (arrow A direction in FIG. 1).

  Further, as shown in FIG. 3, a connecting lever 46 is provided at the longitudinal center of the wiper blade 30. The connecting lever 46 is formed in a substantially rectangular columnar shape and disposed along the longitudinal direction of the wiper blade 30. A holding claw (not shown) is formed at a longitudinally middle portion of the connection lever 46 at a portion on the windshield glass WG side. The relative movement between the backing 40 and the connecting lever 46 in the longitudinal direction is prevented at the position of the longitudinal central portion of the wiper blade 30, and the base 34 of the blade rubber 32 and the backing 40 are accommodated in the connecting lever 46. It is held by the holding claw in the broken state.

  A clip 48 is provided on the proximal end side (the direction of the arrow C in FIG. 3) of the wiper arm 12 with respect to the longitudinal central portion of the connecting lever 46. The clip 48 is formed in a substantially U-shaped cross section opened toward the windshield glass WG (the arrow F direction side in FIG. 3) to cover the proximal end portion of the connecting lever 46 from the upper side. Further, the tip end portion of the clip 48 is rotatably supported by the connection lever 46 with the width direction of the connection lever 46 as the axial direction.

  The clip 48 is disposed inside the tip of the arm side connecting member 22 described above, and is fixed to the arm side connecting member 22. Specifically, a pair of fitting projections 48A fitted with the fixing grooves 22A of the arm side connecting member 22 are formed on the clip 48, whereby relative movement of the wiper blade 30 in the vertical direction with respect to the wiper arm 12 is It is restricted. Further, the clip 48 is formed with a fitting hook 48B to be fitted to the fixing hole 22B of the arm side connecting member 22. The fitting hook 48B is configured to be elastically deformable in the vertical direction, and the hook portion of the fitting hook 48B is fitted in the fixing hole 22B of the arm side connecting member 22. Thereby, the relative movement of the wiper arm 12 in the longitudinal direction with respect to the wiper arm 12 of the wiper blade 30 is limited.

  Further, an inclined surface 46A is formed on the tip end side (the arrow D direction side in FIG. 3) of the wiper arm 12 than the longitudinal central portion of the connecting lever 46 described above. The inclined surface 46A is inclined in a direction away from the windshield glass WG as it moves toward one side in the rotational direction in the width direction of the connecting lever 46, and is smoothly connected to the upper surface 44A of the fin 44 of the holding case 42 .

(About the 1st main nozzle 50 and the 2nd main nozzle 60)

  As shown in FIG. 4, the first main nozzle 50 is provided at the tip of the arm side connecting member 22. The first main nozzle 50 is provided with a first main nozzle main body 52, and the first main nozzle main body 52 is outside the side wall of the arm side connecting member 22 in the rotational direction one side (arrow A direction in FIG. 4). It is fixed. In addition, a substantially cylindrical first main nozzle connection portion 54 is integrally formed in the first main nozzle main body 52, and the first main nozzle connection portion 54 is disposed inside the arm side connection member 22. .

  Furthermore, three first main nozzle injection holes 56a, 56b, 56c are formed in the first main nozzle main body 52, and the first main nozzle injection holes 56a to 56c are arranged side by side in the longitudinal direction of the wiper arm 12 It is done. Each of the first main nozzle injection holes 56a to 56c is in communication with the first main nozzle connection portion 54, and the cleaning liquid supplied to the first main nozzle connection portion 54 is wiper blade by the first main nozzle injection holes 56a to 56c. It is supplied (sprayed) to one side of the rotational direction 30 of the motor. Specifically, one of the first main nozzle injection holes 56a and 56c disposed outside of the three first main nozzle injection holes 56a to 56c is the wiper blade 30 in the longitudinal direction outside and one of the rotation directions A cleaning solution is injected to the side (see the arrow shown in FIG. 4). On the other hand, the cleaning liquid is sprayed to one side in the rotational direction of the wiper blade 30 from the first main nozzle injection holes 56b disposed at the center of the three first main nozzle injection holes 56a to 56c. (See the arrow shown in FIG. 4).

  The second main nozzle 60 is provided at the tip of the arm side connecting member 22 and on the side of the first main nozzle 50. The second main nozzle 60 is configured to be symmetrical with the first main nozzle 50 in the width direction of the arm side connecting member 22. That is, the second main nozzle 60 includes the second main nozzle main body 62 fixed to the outside of the side wall on the other side (the arrow B direction side in FIG. 4) of the arm side connecting member 22 in the pivoting direction. In the main nozzle body 62, three second main nozzle injection holes 66a, 66b, 66c are formed. In addition, a second main nozzle connection portion 64 having a substantially cylindrical shape is integrally formed in the second main nozzle main body 62, and the second main nozzle connection portion 64 is disposed inside the arm side connection member 22. .

  Furthermore, the second main nozzle connection portion 64 and the second main nozzle injection holes 66a to 66c are in communication with each other, and the cleaning liquid supplied to the second main nozzle connection portion 64 is the second main nozzle injection holes 66a to 66c. Thus, the wiper blade 30 is supplied to the side on the other side in the rotational direction of the wiper blade 30. Specifically, the second main nozzle injection holes 66a and 66c disposed at the outer side among the three second main nozzle injection holes 66a to 66c from the other in the longitudinal direction of the wiper blade 30 and the other in the rotational direction A cleaning solution is injected to the side (see the arrow shown in FIG. 4). On the other hand, the cleaning liquid is sprayed from the second main nozzle injection hole 66b disposed at the center of the three second main nozzle injection holes 66a and 66c to the other side in the rotational direction of the wiper blade 30. (See the arrow shown in FIG. 4).

(About stay 70)

  As shown in FIGS. 2 and 3, the stay 70 is provided at a longitudinally intermediate portion of the retainer 18. That is, the stay 70 is provided closer to the proximal end of the wiper arm 12 than the arm side connecting member 22. The stay 70 is disposed in correspondence with one longitudinal end portion of the wiper blade 30 (end portion of the wiper blade 30 on the proximal end side of the wiper arm 12) 30A. As shown in FIG. 1, the stay 70 is formed in a substantially L-shaped block shape as viewed from the longitudinal direction of the wiper arm 12. The base end of the stay 70 is disposed inside the retainer 18 and is fixed to the retainer 18 by a snap fit connection or the like, and the stay 70 is one side of the rotation direction of the wiper arm 12 from the base end. (I.e., the wiper blade 30 side).

  The stay 70 includes a pair of restricting portions 72A and 72B in a substantially rectangular plate shape. The restricting portions 72A and 72B protrude toward the windshield glass WG from the tip end portion of the stay 70 (the end portion on one side in the rotation direction of the wiper arm 12) with the thickness direction being the width direction of the retainer 18 It arrange | positions with a slight clearance so that the longitudinal direction one end part 30A of the braid | blade 30 may be pinched | interposed into the width direction. That is, the restricting portions 72A and 72B are disposed on one side in the rotational direction and on the other side with respect to the longitudinal direction one end 30A of the wiper blade 30. As a result, relative movement of one longitudinal end 30A of the wiper blade 30 relative to the restricting portions 72A and 72B (wiper arms 12) in the rotational direction to one side and the other side in the rotational direction is restricted. The relative movement of the wiper blade 30 in the vertical direction (direction orthogonal to the wiping surface S) with respect to the restricting portions 72A and 72B is permitted by the slight gap.

(About the 1st sub nozzle 80 and the 2nd sub nozzle 90)

  As shown in FIG. 4, the first sub nozzle 80 and the second sub nozzle 90 are integrally formed on the stay 70. The first sub-nozzle 80 includes a pair of substantially cylindrical first sub-nozzle connections 82A and 82B. The first sub-nozzle connections 82A and 82B are accommodated inside the retainer 18, and the wiper arm 12 extends in the axial direction. In the longitudinal direction of the wiper arm 12, it projects from the stay 70 outward in the longitudinal direction of the wiper arm 12. As also shown in FIG. 1, the first sub-nozzle 80 includes a first sub-nozzle injection hole 84, and the first sub-nozzle injection hole 84 is a restricting portion disposed on one side in the rotational direction with respect to the wiper blade 30. It is formed in the lower end part (end part by the side of wiping surface S) of 72A. Further, the stay 70 is formed with a first sub nozzle communication passage 86 communicating the pair of first sub nozzle connection portions 82A and 82B with each other, and between the first sub nozzle communication passage 86 and the first sub nozzle injection hole 84 A first sub-nozzle branch passage 88 is formed to communicate. As a result, the pair of first sub nozzle connection portions 82A and 82B and the first sub nozzle injection holes 84 are communicated with each other.

  Furthermore, as shown in FIG. 4, the first sub-nozzle connection portion 82 </ b> A disposed on the tip end side of the wiper arm 12 with respect to the stay 70 is connected to the first tip side hose 74 as the “first hose”. It is connected to the first main nozzle connection portion 54 of the main nozzle 50. Further, the first sub-nozzle connection portion 82B disposed on the base end side of the wiper arm 12 with respect to the stay 70 is connected to the first washer pump (the first hose) of the vehicle as a first hose. Not shown). As a result, the cleaning liquid pressure-fed by the first washer pump from the washer tank (not shown) of the vehicle is supplied to the first sub nozzle 80 and the first main nozzle 50.

  On the other hand, the second sub-nozzle 90 includes a pair of second sub-nozzle connection portions 92A and 92B having a substantially cylindrical shape. The second sub nozzle connection portions 92A and 92B are accommodated to the side of the first sub nozzle connection portions 82A and 82B and inside the retainer 18, and the axial direction is the longitudinal direction of the wiper arm 12, and the stay 70 to the wiper arm 12 They are respectively projected outward in the longitudinal direction.

  As also shown in FIG. 1, the second sub-nozzle 90 includes a second sub-nozzle injection hole 94, and the second sub-nozzle injection hole 94 is a restricting portion disposed on the other side of the wiper blade 30 in the rotational direction. It is formed in the lower end part (end part by the side of wiping surface S) of 72B.

  Further, a second sub nozzle communication passage 96 communicating the pair of second sub nozzle connection portions 92A and 92B with each other is formed in the stay 70, and between the second sub nozzle communication passage 96 and the second sub nozzle injection hole 94 A second sub-nozzle branch passage 98 is formed to communicate with it. Thus, the pair of second sub nozzle connection portions 92A and 92B and the second sub nozzle injection holes 94 are communicated with each other.

  As shown in FIG. 4, the second sub-nozzle connection portion 92A disposed on the tip end side of the wiper arm 12 with respect to the stay 70 is a second main nozzle via a second tip hose 76 as a “second hose”. It is connected to the 60 second main nozzle connection portion 64. Further, the second sub-nozzle connection portion 92B disposed on the base end side of the wiper arm 12 with respect to the stay 70 is connected to the second washer pump of the vehicle via the second base end hose 77 as the “second hose”. Not shown). As a result, the cleaning liquid pressure-fed by the second washer pump from the washer tank of the vehicle is supplied to the second sub nozzle 90 and the second main nozzle 60.

  Next, the electrical configuration of the vehicle wiper device 10 configured as described above will be described with reference to FIG.

  The vehicle wiper device 10 includes a wiper switch sw1 and a wiper motor WM. When the wiper switch sw1 is turned on, the wiper motor WM is driven to pivot the pivot shaft 17. The wiper switch sw1 has "+ B terminal", "S terminal", "+1 terminal", and "+2 terminal", and the "+ B terminal" is connected to the battery of the vehicle.

  The wiper motor WM is common to the high-speed brush, the low-speed brush, and the low-speed and high-speed brushes in order to correspond to the high-speed mode for operating the vehicle wiper device 10 at high speed and the low-speed mode for operating the vehicle wiper device 10 at low speed. Have a common brush used. The positive terminal connected to the low speed brush of the wiper motor WM is connected to the "+1 terminal" of the wiper switch sw1, and the positive terminal connected to the high speed brush of the wiper motor WM is the "+2 terminal of the wiper switch sw1. "It is connected to the. Further, the negative terminal connected to the common brush of the wiper motor WM is grounded to GND.

  The wiper motor WM is provided with a cam switch csw corresponding to the wiping position of the wiper blade 30, and the cam switch csw is used even when the wiper switch sw1 is turned off in a state where the wiper blade 30 is disposed other than the stop position. The wiper blade 30 is configured to return to the stop position.

  The cam switch csw has "a contact point", "b contact point", "c contact point", "d contact point", and a cam plate cp. The “a-contact” is connected to the “+ B terminal” of the wiper switch sw1, and the “b-contact” is grounded to the ground together with the negative terminal of the wiper motor WM. Further, the “c-contact” is connected to the “S terminal” of the wiper switch sw1, and the “d-contact” is connected to a coil L of a relay of a washer system described later.

  The cam plate cp is configured to rotate integrally with a worm wheel (not shown) connected to the output shaft of the wiper motor WM. By rotating the cam plate cp once, the wiper blade 30 is stopped at the stop position. One reciprocation is made between the reverse position. In FIG. 5, the wiper blade 30 is shown at the stop position. Then, when the cam plate cp rotates, the “c contact” is connected to either the “b contact” or the “a contact” by the cam plate cp. Specifically, when the wiper blade 30 is at a position other than the stop position, the “c-contact” is connected to the “a-contact”. Thus, even if the wiper switch sw1 is turned off when the wiper blade 30 is at a position other than the stop position, current is supplied to the wiper motor WM via the cam switch csw. Then, when the wiper blade 30 is rotated to the stop position, the "c-contact" is connected to the "b-contact". As a result, the low-speed brush and the common brush of the wiper motor WM are closed at the GND potential, and the wiper motor WM is stopped at the stop position.

  Further, the vehicle wiper device 10 includes a washer system, and the washer system comprises a first washer pump motor PM1 for driving a first washer pump and a second washer pump motor PM2 for driving a second washer pump. Have. One end of each of the first washer pump motor PM1 and the second washer pump motor PM2 is grounded to GND via a washer switch sw2. Further, one of the other ends of the first washer pump motor PM1 and the second washer pump motor PM2 is connected to the battery of the vehicle by the switching contact of the washer relay.

  Further, a wiper switch sw1 is connected between the first washer pump motor PM1 and the second washer pump motor PM2 and the washer switch sw2 via a washer interlocking circuit. Thus, when the washer switch sw2 is turned on, the wiper is operated by the wiper relay in the washer interlocking circuit.

  Then, the coil L of the washer relay of the washer system is operated based on whether or not the cam plate cp is connected to the "d contact", and either the first washer pump motor PM1 or the second washer pump motor PM2 Alternatively, current is supplied.

  Specifically, as shown in the timing chart of FIG. 6, when the washer switch sw2 is turned on with the ignition switch (IG SW) of the vehicle turned on, the washer relay relays the first washer pump motor PM1. Is turned on. Then, the wiper motor WM is turned on by the wiper relay in the washer interlocking circuit, and the wiper blade 30 is rotated from the stop position to the reverse position. In FIG. 6, the state in which the wiper blade 30 is rotated to one side in the rotational direction is described as "OPEN", and the state in which the wiper blade 30 is rotated to the other side in the rotational direction is "CLOSE". It is listed as.

  Then, from the drive of the first washer pump motor PM1 to the drive of the second washer pump motor PM2 by the washer relay at a position before the wiper blade 30 reaches the reverse position (the position where it switches from "OPEN" to "CLOSE"). It is set to switch. Hereinafter, this switching position is referred to as "upper switching position", and the 30 positions of the wiper blade at this time correspond to the position indicated by the one-dot chain line in FIG.

  On the other hand, when the wiper blade 30 is turned from the reverse position to the stop position, the second position is reached by the washer relay at a position before the wiper blade 30 reaches the stop position (the position where it switches from "CLOSE" to "OPEN"). The driving of the washer pump motor PM2 is switched to the driving of the first washer pump motor PM1. Hereinafter, this switching position is referred to as "lower switching position", and the position of the wiper blade 30 at this time corresponds to the position shown by the one-dot chain line in FIG.

  That is, as shown in FIG. 7A, the cleaning liquid is supplied from the first main nozzle 50 and the first sub-nozzle 80 until the wiper arm 12 is rotated to one side in the rotational direction and reaches the upper switching position. Ru. Then, at the upper switching position before the reverse position, the driving of the first washer pump motor PM1 is switched to the driving of the second washer pump motor PM2, and the cleaning liquid is supplied from the second main nozzle 60 and the second sub nozzle 90. Is configured.

  On the other hand, as shown in FIG. 7B, the cleaning liquid from the second main nozzle 60 and the second sub-nozzle 90 until the wiper arm 12 is rotated from the reverse position to the other side in the rotational direction and reaches the lower switching position. Is supplied. Then, at the lower switching position before the stop position, the drive of the second washer pump motor PM2 is switched to the drive of the second washer pump motor PM2, and the cleaning liquid is supplied from the first main nozzle 50 and the first sub nozzle 80. It is configured.

  The area between the upper switching position and the lower switching position is a central wiping area CA (see FIG. 2), and the central position in the pivoting direction in the central wiping area CA (equal distance from the stop position and the reverse position) The position separated by (3) is the rotation direction center position CL (see FIG. 2).

  Next, the operation and effects of the present embodiment will be described.

  In the vehicle wiper device 10 configured as described above, the stay 70 is provided on the base end side of the arm side connecting member 22 of the wiper arm 12, and the stay 70 is on the wiper blade 30 side from the wiper arm 12 (rotational direction It is extended to one side). The pair of restricting portions 72A and 72B in the stay 70 are disposed so as to sandwich the one end 30A in the longitudinal direction of the wiper blade 30 in the width direction. As a result, relative movement of the wiper blade 30 relative to the wiper arm 12 relative to one side in the rotational direction and the other side in the rotational direction is restricted. Therefore, when the wiper blade 30 reciprocates, it is possible to suppress or prevent the swing (vibration) of the one side and the other side of the rotational direction of the wiper blade 30.

  Further, when the cleaning liquid is supplied to the wiping surface S of the windshield glass WG and the wiping surface S is wiped by the wiper blade 30, the washer switch sw2 is turned ON. When the washer switch sw2 is turned on, the wiper switch sw1 is turned on interlockingly with the washer switch sw2, and the wiper blade 30 together with the wiper arm 12 is rotated from the stop position to one side in the rotational direction. At this time, the first washer pump motor PM1 is driven, and the cleaning liquid is supplied from the first main nozzle 50 and the first sub nozzle 80 to the wiper blade 30 in the rotational direction on one side. Then, at the upper switching position, the driving of the first washer pump motor PM1 is switched to the driving of the second washer pump motor PM2, and the cleaning liquid is supplied from the second main nozzle 60 and the second sub nozzle 90.

  When the wiper blade 30 is further rotated from the upper switching position to one side in the rotational direction, the wiper blade 30 is inverted at the reverse position and rotated to the other side in the rotational direction. At this time, the cleaning liquid is supplied from the second main nozzle 60 and the second sub-nozzle 90 to the other side of the wiper blade 30 in the rotational direction. Then, in the lower switching position, the drive of the second washer pump motor PM2 is switched to the drive of the first washer pump motor PM1, and the cleaning liquid is supplied from the first main nozzle 50 and the first sub nozzle 80.

  When the wiper blade 30 is further rotated from the lower switching position to the other side in the rotational direction, the wiper blade 30 is inverted at the stop position and rotated to one side in the rotational direction. Thereafter, the reciprocating rotation of the wiper blade 30 is repeated a set predetermined number of times.

  Here, the first sub-nozzles 80 (the first sub-nozzle jetting holes 84) and the second sub-nozzles 90 (the second sub-nozzles jetting holes 94) are provided in the restricting portions 72A and 72B of the stay 70. For this reason, the first sub nozzle injection hole 84 and the second sub nozzle injection hole 94 can be disposed to the side of the wiper blade 30 by utilizing the stay 70. Further, one end of a first base end hose 75 arranged on the wiper arm 12 is connected to the first sub nozzle 80, and one end of a second base end hose 77 is connected to the second sub nozzle 90. . For this reason, the cleaning fluid pressure-fed by the first base end side hose 75 is supplied (sprayed) by the first sub-nozzle jetting hole 84 to one side of the wiper blade 30 in the rotational direction. Further, the cleaning liquid pressure-fed by the second base end side hose 77 is supplied (sprayed) to the other side in the rotational direction of the wiper blade 30 by the second sub-nozzle jetting hole 94. Therefore, the influence of the air flow on the cleaning liquid supplied (sprayed) from the first sub nozzle 80 and the second sub nozzle 90 can be significantly reduced. As a result, the cleaning liquid can be accurately supplied (sprayed) to the front side in the wiping advancing direction with respect to the wiper blade 30.

  In addition, since the stay 70 is provided on the proximal end side of the wiper arm 12 relative to the arm side connecting member 22, the cleaning solution can be accurately directed forward with respect to the longitudinal direction end 30 A of the wiper blade 30. It can be supplied.

  In particular, when the wiping attitude of the wiper blade 30 changes, the first main nozzle injection holes 56a to 56c (second main nozzle injection holes 66a to 66c) of the first main nozzle 50 (second main nozzle 60) are ejected. The cleaning liquid is blown up to the other end (tip end) of the wiper blade 30 in the longitudinal direction by the air flow. For this reason, the cleaning solution is difficult to spread around the longitudinal end portion 30A of the wiper blade 30.

  On the other hand, by providing the first sub nozzle 80 and the second sub nozzle 90 in the stay 70 in addition to the first main nozzle 50 and the second main nozzle 60, the wiper blade also from the first sub nozzle 80 and the second sub nozzle 90 A cleaning solution is supplied near the one longitudinal end 30A of 30. Thus, the cleaning liquid can be effectively supplied to the one end 30A of the wiper blade 30 in the longitudinal direction, and the insufficient supply of the cleaning liquid to the vicinity of the one end 30A of the wiper blade 30 can be eliminated.

  Further, the first sub nozzle 80 and the second sub nozzle 90 are integrally formed with the stay 70. Therefore, compared to the case where the first sub nozzle 80 and the second sub nozzle 90 are provided separately from the stay 70, it is possible to suppress an increase in the number of parts and to reduce the number of assembling steps.

  Furthermore, in the central wiping area CA between the stop position and the reverse position, the nozzles in the same direction as the rotation direction of the wiper blade 30 corresponding to the rotation direction of the wiper blade 30 (the first main nozzle 50 and the The cleaning liquid is alternatively supplied from the one sub-nozzle 80 or the second main nozzle 60 and the second sub-nozzle 90). That is, at least at the central position CL in the rotational direction, the cleaning liquid is supplied from the first main nozzle 50 and the first sub-nozzle 80 to the wiper blade 30 rotated to one side in the rotational direction, and the other side in the rotational direction The cleaning liquid is supplied from the second main nozzle 60 and the second sub-nozzle 90 to the wiper blade 30 which is rotated. Therefore, since the cleaning liquid is supplied to the front side in the wiping advancing direction of the wiper blade 30 at the rotational direction central position CL, the supplied cleaning liquid is immediately wiped by the wiper blade 30. As a result, it is possible to prevent the visual field from being disturbed by, for example, the remaining cleaning fluid of the wiper blade 30.

  Further, since the cleaning liquid is supplied to the other side of the rotating direction of the wiper blade 30 at the upper switching position before the reverse position when the wiper blade 30 is rotated to one side in the rotating direction, waste of the cleaning liquid is suppressed. However, the cleaning solution is prevented from being sprayed out by the wiper blade 30 at the reverse position.

  Similarly, since the cleaning liquid is also supplied to one side in the rotational direction of the wiper blade 30 at the lower switching position before the stop position when the wiper blade 30 is rotated to the other side in the rotational direction, waste of the cleaning liquid It can be suppressed.

  Further, the stay 70 is extended from the wiper arm 12 to the wiper blade 30 side as viewed in a direction orthogonal to the wiping surface S of the windshield glass WG, and the pair of restricting portions 72A and 72B of the stay 70 is the wiper arm 12 It is disposed offset to one side in the rotational direction. Therefore, the restricting portions 72A and 72B can be disposed corresponding to the wiper blade 30 which is disposed to be offset to one side in the rotational direction with respect to the wiper arm 12.

Further, the first sub nozzle injection holes 84 (second sub nozzle injection holes 94) of the first sub nozzles 80 (second sub nozzles 90) are formed in the restricting portion 72A (72B). Therefore, the first sub nozzle injection holes 84 and the second sub nozzle injection holes 94 are disposed on the side of the wiper blade 30 offset from the wiper arm 12 so that the first sub nozzle injection holes 84 and the second sub nozzle injection holes 94 are formed. Can be supplied to the side of the wiper blade 30.

Second Embodiment

  A vehicle wiper device 100 according to a second embodiment will be described using FIGS. 8 and 9. The vehicle wiper device 100 is configured the same as the vehicle wiper device 10 according to the first embodiment except for the points described below. The members of the vehicle wiper device 100 that are configured the same as the vehicle wiper device 10 are given the same reference numerals.

  That is, in the wiper apparatus 100 for vehicles, the longitudinal direction middle part of the arm side connection member 22 of the wiper arm 12 is not bent. Thus, the wiper blade 30 is not offset to the one side in the rotational direction with respect to the wiper arm 12 when viewed from the direction orthogonal to the wiping surface S of the windshield glass WG, and the wiper blade 30 is directly below the wiper arm 12 It is arranged on the (windshield glass WG side).

  The stay 70 is disposed inside the retainer 18 of the wiper arm 12, and the pair of restricting portions 72A and 72B of the stay 70 project from the stay 70 toward the windshield glass WG. Thereby, the relative movement of the longitudinal end 30A of the wiper blade 30 with respect to the wiper arm 12 in the rotational direction one side and the other side in the rotational direction is restricted.

  Furthermore, the first sub nozzle injection hole 84 is provided at the lower end of the restricting portion 72A on one side in the rotational direction with respect to the wiper blade 30, and the second sub nozzle injection hole 94 rotates with respect to the wiper blade 30. It is provided at the lower end of the regulating portion 72B on the other side of the direction. Thus, in the second embodiment as well, since the first sub nozzle injection holes 84 and the second sub nozzle injection holes 94 are disposed on the side in the width direction of the wiper blade 30, the first sub nozzle injection holes 84 and the The influence of the air flow on the cleaning liquid supplied (injected) from the second sub nozzle injection holes 94 can be reduced. Therefore, also in the second embodiment, the same operation and effect as in the first embodiment can be obtained.

  In the first and second embodiments, the vehicle wiper device 10, 100 includes the first main nozzle 50, the second main nozzle 60, and the stay 70, and the stay 70 includes: The first sub nozzle 80 and the second sub nozzle 90 are integrally formed. Instead of this, the second main nozzle 60 and the second sub nozzle 90 may be omitted in the vehicle wiper device 10, 100. That is, in the vehicle wiper device 10, 100, when the wiper blade 30 is rotated to one side in the rotational direction, the cleaning liquid is supplied from the first main nozzle injection holes 56a to 56c and the first sub nozzle injection hole 84 (injection ) May be configured.

  Further, in the first embodiment and the second embodiment, the first sub nozzle 80 and the second sub nozzle 90 are integrally formed on the stay 70. Instead of this, the first sub nozzle 80 and the second sub nozzle 90 may be configured separately from the stay 70, and the first sub nozzle 80 and the second sub nozzle 90 may be attached to the stay 70.

  Furthermore, in the first embodiment and the second embodiment, the first sub nozzle injection holes 84 (second sub nozzle injection holes 94) are formed in the lower end portion of the restricting portion 72A (72B). The position of the one sub nozzle injection hole 84 (second sub nozzle injection hole 94) can be set arbitrarily. For example, the first sub-nozzle injection holes 84 (second sub-nozzle injection holes 94) may be formed at the middle of the direction in which the restricting portions 72A (72B) protrude from the stays 70.

  Furthermore, in order to improve the appearance of each of the hoses 74 to 77 arranged along the wiper arm 12, a cover formed in a U-shaped cross section that closes the opening of the retainer 18 or the like may be attached. At this time, the cover enables the stay 70 to be exposed.

DESCRIPTION OF SYMBOLS 10 ... Wiper apparatus for vehicles, 12 ... Wiper arm, 30 ... Wiper blade, 70 ... Stay, 72A ... Control part (opposing wall part, nozzle wall), 72B ... Control part ( Opposite wall portion, nozzle wall), 75: first proximal end hose (hose, first hose), 77: second proximal end hose (hose, second hose), 80: first Sub nozzle (first nozzle), 90: second sub nozzle (second nozzle), 100: vehicle wiper device, S: wiping surface

Claims (9)

A wiper arm that is pivoted back and forth between a stop position and a reverse position;
The wiper arm is connected to the tip end side, is rotated from the stop position to one side in the rotational direction as the wiper arm reciprocates, and is rotated from the reverse position to the other side in the rotational direction to wipe the wiping surface A wiper blade,
The wiper arm is provided on the proximal end side of the connecting portion with the wiper blade, extends from the wiper arm to the wiper blade side, and is disposed to face the wiper blade so as to sandwich the wiper blade in the width direction. A stay having a pair of opposed wall portions,
The stay includes a first nozzle provided with an ejection hole at an end portion on the wiping surface side in one of the pair of opposing wall portions, and supplying a cleaning liquid to one side of the rotating direction of the wiper blade. A jet nozzle is provided at an end of the other of the pair of opposing wall portions on the wiping surface side to supply a cleaning liquid to the side of the other side of the rotating direction of the wiper blade; Yes,
One end of a first hose arranged in the wiper arm is connected to the first nozzle, and one end of a second hose arranged in the wiper arm is connected to the second nozzle. Wiper device. The wiper blade has a wiping portion for wiping the wiping surface and a blade rubber having a base of an upper portion of the wiping portion, a backing for dispersing the pressing force from the wiper arm in the longitudinal direction, the backing and the base of the blade rubber And a holding case for holding the
Before SL wiper blade, in a state in which the backing between the tips of the pair of opposing walls is present, the vehicle wiper apparatus according to claim 1 disposed between the pair of opposing walls. The wiper blade, the wiping portion of the blade rubber is vehicle wiper device according to claim 2 which is held by the holding case located on the wiping surface side than the tip of the pair of opposing walls .   When the stay is viewed from the longitudinal direction of the wiper blade, the distance between the pair of opposing wall portions is larger than the widthwise dimension of the portion of the holding case where the backing is held. A vehicle wiper device according to claim 2 or claim 3.   At least at the central position in the rotational direction between the stop position and the reverse position, the first nozzle or the first side in the same direction as the rotational direction of the wiper blade corresponding to the rotational direction of the wiper blade. The vehicle wiper device according to any one of claims 1 to 4, wherein the cleaning liquid is supplied alternatively from the two nozzles.   When viewed from the direction orthogonal to the wiping surface, the pair of opposing wall portions are disposed offset to one side in the rotational direction with respect to the wiper arm, and the opposite side to the wiper arm with respect to the wiper blade The vehicle wiper device according to any one of claims 1 to 5, wherein the jet hole of the first nozzle is located on the side of the vehicle. A wiper arm that is pivoted back and forth between a stop position and a reverse position;
The wiper arm is connected to the front end side of the wiper arm and is disposed to overlap the wiper arm when viewed from a direction perpendicular to the wiping surface, and is rotated from the stop position to one side in the rotation direction as the wiper arm reciprocates. A wiper blade that is rotated from the reverse position to the other side in the rotational direction to wipe the wiping surface;
The wiper arm is provided on a proximal end side of a connecting portion with the wiper blade and extends from the wiper arm toward the wiper blade, and is disposed so as to sandwich the wiper blade in the width direction of the wiper blade. And a stay having a nozzle wall of
The stay includes a first nozzle provided with an ejection hole at an end portion on the wiping surface side in one of the pair of nozzle walls to supply a cleaning liquid to one side of the rotating direction of the wiper blade. The jet nozzle is provided at the end on the wiping surface side of the other of the pair of nozzle walls, and has a second nozzle for supplying a cleaning liquid to the side of the other side of the rotating direction of the wiper blade.
One end of a first hose arranged in the wiper arm is connected to the first nozzle, and one end of a second hose arranged in the wiper arm is connected to the second nozzle. Wiper device. The first nozzle has a communication passage in communication with a connecting portion to which one end of the first hose is connected,
One of the pair of opposing wall portions has a first branch passage branched from the communication passage of the first nozzle and communicating with the ejection hole of the first nozzle ,
The second nozzle has a communication passage in communication with a connecting portion to which one end of the second hose is connected,
The other of the pair of opposing wall portions has a second branch passage branched from the communication passage of the second nozzle and communicating with the ejection hole of the second nozzle . A vehicle wiper device according to any one of the preceding claims. The first nozzle has a communication passage in communication with a connecting portion to which one end of the first hose is connected,
One of the pair of nozzle walls has a first branch passage branched from the communication passage of the first nozzle and communicating with the ejection hole of the first nozzle ,
The second nozzle has a communication passage in communication with a connecting portion to which one end of the second hose is connected,
8. The vehicle wiper according to claim 7, wherein the other of the pair of nozzle walls has a second branch passage branched from the communication passage of the second nozzle and communicating with the ejection hole of the second nozzle. apparatus.