JP2012158263A - Vehicle wiper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle wiper device that can facilitate manufacture and suppress an increase in parts count.SOLUTION: A first wiping area A1 and a second wiping area A2 of a wiping surface Ga are respectively wiped by wiper blades 13a, 13b respectively coupled to a pair of reciprocally turning wiper arms 12a, 12b on tips thereof. The wiper blade 13a is provided with a washer nozzle 41 to apply washer fluid to the wiping surface Ga. The washer nozzle 41 applies the washer fluid to the first wiping area A1 of the wiper blade 13a (watering areas 52A to 52C), and is able to jet the washer fluid outside of an end (a base end 13c) of the wiper blade 13a in a longitudinal direction (a watering area 52D) for applying the washer fluid to the second wiping area A2 of the wiper blade 13b.

Description

  The present invention relates to a wiper device for a vehicle provided with means for supplying a cleaning liquid to a wiping surface as well as wiping a wiping surface of a window glass.

  2. Description of the Related Art Conventionally, a vehicle wiper device includes a wiper arm that is reciprocally rotated, and a wiper blade that is connected to a distal end portion of the wiper arm and wipes a wiping surface of a wind glass. In this type of vehicle wiper device, there is a type in which a washer nozzle is provided on the engine hood or on the lower surface of the rear end of the engine hood. However, in such a configuration, since the cleaning liquid is jetted and supplied from the washer nozzle beyond the wiper arm and the wiper blade, the cleaning liquid interferes with the wiper arm and splatters. There is a problem in that the water spot moves downward and it becomes difficult to supply the cleaning liquid to an appropriate position.

  Therefore, in order to solve such a problem, for example, in the vehicle wiper device of Patent Document 1, the washer nozzle is provided on the wiper blade, whereby the cleaning liquid can be supplied to the wiping surface from a closer distance. As a result, the influence of traveling wind on the cleaning liquid ejected from the washer nozzle can be suppressed, and as a result, the cleaning liquid can be reliably supplied to the wiping surface.

JP 2008-162328 A

  By the way, in general, a wiper device for a vehicle is provided with two wipers (wiper arm and wiper blade) for wiping the area on the driver's seat side and the area on the passenger seat side of the wiping surface. For this reason, in order to supply the cleaning liquid to each wiping area of the plurality of wiper blades, it is necessary to provide a washer nozzle on each wiper blade. However, in such a configuration, not only the work of attaching the washer nozzle to each wiper blade but also the work of arranging and fixing the hose connected to the washer nozzle to each wiper arm is increased, and the number of parts of the washer nozzle and the hose is increased. Will also increase.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle wiper device that facilitates manufacturing and suppresses an increase in the number of parts.

  In order to solve the above problems, the invention according to claim 1 is characterized in that the first wiper blade and the second wiper blade connected to the tip portions of the first wiper arm and the second wiper arm that are reciprocally rotated are wiped, respectively. In the vehicle wiper device for wiping the first wiping area and the second wiping area of the surface, the first wiper blade is provided with a washer nozzle for supplying cleaning liquid to the wiping surface, and the washer nozzle is The cleaning liquid is supplied to the first wiping area, and the cleaning liquid can be jetted to the outside in the longitudinal direction from the longitudinal end of the first wiper blade so as to supply the cleaning liquid to the second wiping area. Features.

  In the present invention, the washer nozzle provided on the first wiper blade allows the cleaning liquid not only to the first wiping area that is the wiping area of the first wiper blade itself but also to the second wiping area to be wiped by the second wiper blade. Is supplied. For this reason, the parts of the washer nozzle and the hose to the second wiper arm and the second wiper blade and the assembling man-hours can be reduced. As a result, the manufacturing can be facilitated and the increase in the number of parts can be suppressed.

  According to a second aspect of the present invention, in the vehicle wiper device according to the first aspect, the first wiping area is an area on the vehicle passenger seat side of the wiping surface wiped by the first wiper blade. The second wiping area is an area on the vehicle driver's seat side of the wiping surface that is wiped by the second wiper blade.

  In this invention, the washer nozzle is provided not on the second wiper blade on the vehicle driver's seat side but on the first wiper blade on the vehicle passenger seat side. Unlike the above configuration, in the configuration in which the washer nozzle is provided in the second wiper blade on the vehicle driver's seat side, when the cleaning liquid is supplied to the rear side in the traveling direction of the second wiper blade during the reciprocating operation, the cleaning liquid is Until it is wiped by the second wiper blade that has been reversed, it remains attached to the wiping surface in front of the driver's seat without being wiped off. Although there is a possibility that the cleaning liquid adhered to the front of the driver's seat may interfere with the driving field of view, if the washer nozzle is provided on the first wiper blade on the vehicle passenger's seat as in the present invention, the first wiper Since the second wiper blade wipes the second wiping area on the vehicle driver's seat side after the first wiper blade even if the blade remains attached without being wiped rearward in the moving direction of the blade, the driver's view in front of the driver's seat Is quickly secured without being disturbed by the cleaning liquid.

  According to a third aspect of the present invention, in the vehicle wiper device according to the first or second aspect, the washer nozzle has the second wiper blade in which the cleaning liquid sprayed toward the second wiping area is at a stop position. The injection direction is set so as to be incident at an acute angle with respect to the longitudinal axis.

  In this invention, since the cleaning liquid sprayed from the second supply unit hits the second wiper blade at an acute angle, the cleaning liquid is applied to the second wiper blade while suppressing the scattering of the cleaning liquid when hitting the second wiper blade. It can be guided along the longitudinal direction of the wiper blade.

  According to a fourth aspect of the present invention, in the vehicle wiper device according to any one of the first to third aspects, the washer nozzle is at least one first for supplying a cleaning liquid to the first wiping area. In order to supply the cleaning liquid to the second wiping area, the supply section and at least one second supply section capable of spraying the cleaning liquid to the outer side in the longitudinal direction from the longitudinal end of the first wiper blade are individually provided. Features.

  In this invention, the washer nozzle has a first supply unit and a second supply unit separately, the first supply unit supplies the cleaning liquid to the first wiping area, and the second supply unit is supplied to the second wiping area. Supply cleaning solution. For this reason, it becomes possible to supply cleaning liquid reliably by both the 1st and 2nd wiping area.

  According to a fifth aspect of the present invention, in the vehicle wiper device according to the fourth aspect, when the second wiper blade starts wiping from the stop position in the landing area of the cleaning liquid sprayed from the second supply unit The second wiper blade is set to have a spread in the longitudinal direction of the second wiper blade at the stop position on the front side in the traveling direction of the second wiper blade.

  In the present invention, in the state where the second wiper blade is in the stop position, the cleaning liquid sprayed from the washer nozzle toward the second wiping area spreads in the longitudinal direction of the second wiper blade. It becomes possible to spread the cleaning liquid.

  According to a sixth aspect of the present invention, in the vehicle wiper device according to the fourth or fifth aspect, the second supply unit sprays the cleaning liquid as a directional jet flow in which the cleaning liquid is concentrated toward the second wiping area. It consists of possible jet nozzles.

  In this invention, since the 2nd supply part consists of jet nozzles, even when the washer nozzle of the 1st wiper blade and the 2nd wiping area are far apart, cleaning fluid is stably supplied to the 2nd wiping area. Is possible. When the spray direction is set so that the cleaning liquid sprayed toward the second wiping area is incident at an acute angle with respect to the longitudinal axis of the second wiper blade at the stop position (see claim 3). By using the second supply part as a jet nozzle, it becomes possible to guide the cleaning liquid along the second wiper blade and to spread it more reliably in the longitudinal direction of the wiper blade.

  According to a seventh aspect of the present invention, in the vehicle wiper device according to any one of the fourth to sixth aspects, the first supply unit ejects the cleaning liquid as a diffusion flow that self-oscillates and diffuses in a predetermined direction. It is characterized by comprising a possible diffusion nozzle.

  In this invention, the 1st supply part which supplies a washing | cleaning liquid to the 1st wiping area wiped with the 1st wiper blade of the side in which the washer nozzle was provided consists of a diffusion nozzle. For this reason, for example, by setting the diffusion direction along the longitudinal direction of the first wiper blade, the cleaning liquid can be effectively supplied in a wide range along the longitudinal direction of the first wiper blade.

  Therefore, according to the above-described invention, manufacturing can be facilitated and an increase in the number of parts can be suppressed.

It is a mimetic diagram showing the wiper device for vehicles of this embodiment. It is a perspective view which shows a passenger seat side wiper. (A) is a plan view of the wiper blade, (b) is a front view of the wiper blade, and (c) is a rear view of the wiper blade. It is a disassembled perspective view of a wiper blade. It is a perspective view of the mounting plate which has a washer nozzle. It is a cross-sectional perspective view of a washer nozzle. It is a mimetic diagram showing a wiper device for vehicles in which a wiper blade is in a stop position (down reversal position). It is a schematic diagram for showing an example of a supply mode of a cleaning liquid in a configuration in which a washer nozzle is provided on a wiper blade of a vehicle driver's seat.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 1, the vehicle wiper device 1 according to the present embodiment is for wiping a wiping surface Ga that is a surface of a windshield G of a vehicle on the outside of a passenger compartment. The vehicle wiper device 1 has two wipers, a passenger seat side wiper 11a and a driver seat side wiper 11b. The passenger seat side wiper 11a is for wiping the area (first wiping area A1) on the passenger seat side of the wiping surface Ga of the windshield G of the automobile, and one driver seat side wiper 11b is the wiping surface Ga. This is for wiping the driver side area (second wiping area A2).

  The front passenger side wiper 11a includes a wiper arm 12a and a wiper blade 13a, and the driver side wiper 11b includes a wiper arm 12b and a wiper blade 13b. The wiper arms 12a and 12b of the wipers 11a and 11b are respectively fixed to pivot shafts P1 and P2 whose base ends are reciprocally rotated at a predetermined angle by a driving force of a wiper motor (not shown), and the wiper arms 12a and 12b. Wiper blades 13a and 13b are rotatably connected to the front end portions of the two.

  Each of the pivot shafts P1 and P2 is rotatably supported by a pivot holder (not shown) provided on a cowl panel (not shown) or the like disposed under the window glass G. The pivot shaft P1 of the passenger side wiper 11a is provided at a position slightly closer to the driver seat side than the center of the wind glass G in the width direction, and the pivot shaft P2 of the driver seat side wiper 11b is operated in the width direction of the wind glass G. It is provided near the lower end on the seat side. Each wiper arm 12a, 12b is equipped with a spring (not shown) for pressing the wiper blades 13a, 13b against the wiping surface Ga. The wiper arms 12a and 12b perform a reciprocating rotational movement as the pivot shafts P1 and P2 reciprocate, so that the wiper blades 13a and 13b perform a wiping operation on the wiping surface Ga.

  In the vehicle wiper device 1 of the present embodiment, a washer nozzle 41 for injecting and supplying the cleaning liquid is provided only on the wiper blade 13a of the passenger side wiper 11a of the two wipers 11a and 11b. Further, as shown in FIG. 2, a vehicle body side hose 40 for supplying cleaning liquid to the washer nozzle 41 is arranged on the wiper arm 12 a of the passenger side wiper 11 a. The driver's seat side wiper 11b has substantially the same configuration as that of the passenger's seat side wiper 11a except for the components attached to the washer nozzle 41 such as the washer nozzle 41 and the vehicle body side hose 40. Detailed explanation about the wiper blade 13a of 11a will be given, and detailed explanation of the wiper blade 13b of the driver side wiper 11b will be omitted.

  As shown in FIGS. 3A, 3 </ b> B, and 3 </ b> C, the wiper blade 13 a includes a lever assembly 14, a blade rubber 15, a cover member 16, a connecting member 17, and a mounting plate 18. .

  The lever assembly 14 is formed in a tournament shape (hierarchical) by three levers, that is, a primary lever 21 and two secondary levers 22 rotatably connected to both ends of the primary lever 21 in the longitudinal direction. Yes.

  The primary lever 21 has a holder portion 21a and arm portions 21b extending from both sides of the holder portion 21a at the center in the longitudinal direction. In the holder portion 21a, a pair of flat side walls are parallel to each other, and a rectangular opening portion 21c is formed in the upper portion, and the distal end portion of the wiper arm 12a is inserted from the opening portion 21c. Further, the connecting member 17 is rotatably attached to the holder portion 21a, and the distal end portion of the wiper arm 12a is detachably attached to the connecting member 17. The arm portion 21b is formed in a mountain fold shape (substantially U-shaped cross section with an opening on the wiping surface Ga side) in a cross sectional view orthogonal to the longitudinal direction.

  Similar to the arm portion 21b of the primary lever 21, the secondary lever 22 is formed in a mountain fold shape (substantially U-shaped cross section with the wiping surface Ga side opened). The secondary lever 22 has a central portion in the longitudinal direction coupled to both end portions of the primary lever 21 (tips of the arm portions 21b) so as to be rotatable. A grip portion 22 a for gripping (holding) the blade rubber 15 is formed at each longitudinal end of each secondary lever 22. The gripping portion 22a has a substantially U-shape that opens on the wiping surface Ga when viewed from the longitudinal direction, and the opening ends extend inward from each other and are formed narrow. These four gripping portions 22a are formed long by rubber members and grip the blade rubber 15 for contacting and wiping the wiping surface Ga with a predetermined interval in the longitudinal direction as shown in FIG.

  Incidentally, a pair of long backings 19 are attached to the blade rubber 15 along the longitudinal direction of the rubber 15 so as to disperse the pressing force toward the wiping surface Ga received from the gripping portion 22a in the longitudinal direction. ing. The backing 19 is divided into a plurality of different curvatures in the longitudinal direction and is formed in a curved shape as a whole. The curvature in each section of the backing 19 is set in accordance with the curved surface shape of the wiping surface Ga so that the blade rubber 15 to which the backing 19 is attached follows the entire wiping range of the wiping surface Ga.

  As shown in FIGS. 2 to 4, the cover member 16 that covers the lever assembly 14 is provided so as to extend to both ends of the blade rubber 15. The cover member 16 is composed of a center cover portion 31 that is formed of a resin material so as to have a predetermined rigidity, and two side cover portions 32 that are disposed on both sides of the center cover portion 31. Yes.

  The center cover portion 31 is attached to the primary lever 21 and covers substantially the entire lever 21. The center cover part 31 has a holder accommodating part 31a at the center in the longitudinal direction and arm accommodating parts 31b extending in the longitudinal direction from both sides of the holder accommodating part 31a. Further, the center cover portion 31 has a nozzle accommodating portion 31f for accommodating a washer nozzle 41 provided on the mounting plate 18 described later. The holder accommodating portion 31a accommodates the holder portion 21a of the primary lever 21 and has an opening portion 31c corresponding to the opening portion 21c provided in the holder portion 21a at the upper portion, from the opening portion 31c to the tip of the wiper arm 12a. Part is inserted. The arm accommodating portion 31b is formed in a mountain fold shape (substantially U-shaped cross section with an opening on the wiping surface Ga side) in a cross-sectional view orthogonal to the longitudinal direction. The nozzle accommodating part 31f is adjacent to the holder accommodating part 31a, and expands its internal space in a substantially streamline shape in the width direction on the opposite side to the later-described fin part 31d (wiping start progress direction side of the wiper blade 13a). (See FIG. 3A).

  The base end of the side cover portion 32 is rotatably attached to both end portions of the primary lever 21 (the distal end portion of the arm portion 21b). In this case, a connecting pin 32x is provided on the inner side of the base end portion of the side cover portion 32, and a fitting hole 21x into which the connecting pin 32x is fitted is provided at both ends of the primary lever 21, and the connecting pin 32x The side cover part 32 can be rotated by fitting with the fitting hole 21x. The side cover portion 32 is formed in a mountain fold shape (substantially U-shaped with an opening on the wiping surface Ga side), like the arm housing portion 31b of the center cover portion 31, and the height of the top portion increases from the base end portion toward the tip end portion. The height is gradually lowered. The side cover portion 32 covers the secondary lever 22 protruding from both ends of the primary lever 21, and is disposed on the blade rubber 15 further on the end side than the secondary lever 22. At the tip of the side cover portion 32, a grip portion 32 a is formed that has substantially the same shape as the grip portion 22 a of the secondary lever 22 in order to grip (hold) the end portion of the blade rubber 15. And the side cover part 32 is a base end part (connection pin 32x) with which the both ends of the primary lever 21 are mounted | worn so that the bending of the blade rubber 15 which protruded in the longitudinal direction from the edge part of each secondary lever 22 may be followed. It is designed to rotate around.

  Further, the pressing force that presses the blade rubber 15 toward the wiping surface Ga by receiving the traveling wind generated when the vehicle travels is applied to the arm housing portion 31b of the center cover portion 31 and the side cover portion 32 on the vehicle front side wall portion. The fin portions 31d and 32b for generating are respectively formed. Further, the fin portions 31 d and 32 b are provided in the entire longitudinal direction of the arm housing portion 31 b and the side cover portion 32.

  Further, as shown in FIGS. 3A and 3C, the center cover portion 31 is adjacent to the holder housing portion 31a on the side opposite to the side where the fin portion 31d is provided (the vehicle rear side, that is, the wiper blade 13a). A washer nozzle 41 is arranged in the nozzle housing portion 31f formed to bulge out in the wiping start progress direction side at the stop position. The washer nozzle 41 is integrally formed with a resin mounting plate 18 as shown in FIG. 5 mounted on the holder portion 21a of the primary lever 21 from below.

  Here, in the plate main body portion 18a of the mounting plate 18, a rectangular opening portion 18b corresponding to the opening portion 21c of the holder portion 21a is formed in the central portion in the longitudinal direction. A mounting piece 18c extending upward along the outer side surface of each side wall of the holder portion 21a is formed at both ends in the width direction of the opening portion 18b, and the engagement piece 18c is hooked to the upper end of the holder portion 21a inside each mounting piece 18c. Two stop projections 18d are formed. Thereby, the mounting plate 18 is detachably mounted on the holder portion 21a.

  On both sides in the longitudinal direction of the opening 18b, a closing portion 18e for closing the lower opening of the holder portion 21a is provided. On the upper surface of each closing part 18e, partition walls 18f inserted inside the holder part 21a are provided upright. The partition wall 18f partitions the internal space on the opening 21c side in the holder portion 21a and the internal space on the outer side in the longitudinal direction (on the arm portion 21b side) from the opening 21c. In other words, the provision of the blocking portion 18e prevents the air flow during traveling from entering from the lower opening of the holder portion 21a on both sides in the longitudinal direction of the opening portion 21c. By providing the partition wall 18f, the inside of the opening portion 21c is provided. Is prevented from entering the outside in the longitudinal direction (arm portion 21b side). Thereby, the air flow of the primary lever 21 part centering on the holder part 21a becomes smooth, and the wind noise during driving | running | working is reduced.

  On one side of the plate body 18a (on the side opposite to the side where the fins 31d are provided), a lid 18g is formed to extend. The lid portion 18g closes a gap formed between the primary lever 21 and the center cover portion 31. Also in the lid portion 18g, the airflow is prevented from entering the gap between the primary lever 21 and the center cover portion 31, and the wind noise during traveling is reduced.

[Configuration of washer nozzle]
A washer nozzle 41 is integrally formed on the upper surface of the lid portion 18g. That is, the opening (gap) of the nozzle accommodating portion 31f in the center cover portion 31 is closed by the lid portion 18g, and the washer nozzle 41 is accommodated therein. The washer nozzle 41 includes a hose connection portion 42, a check valve portion 43, and a nozzle portion 44.

  As shown in FIG. 6, a case portion 43a of a substantially bottomed cylindrical check valve portion 43 is integrally formed on the upper surface of the lid portion 18g, and the bottom portion of the case portion 43a has a lid portion 18g. A nozzle portion 44 is formed integrally with the upper surface along the longitudinal direction. The case 43a has a housing recess 43b having a circular cross section, and the valve body 45 and the coil spring 46 are housed in the housing recess 43b.

  The valve body 45 has a base portion 45a formed in a substantially cylindrical shape with a resin and a seal portion 45b formed in a substantially disk shape with an elastic member such as rubber or elastomer. It is configured to be mounted at one end in the axial direction. An annular spring mounting groove 45c is formed at the other axial end of the base 45a, and one end of the coil spring 46 is mounted in the mounting groove 45c. The coil spring 46 is interposed between the valve body 45 and the bottom of the case portion 43a. The valve body 45 (base 45a and seal portion 45b) is set so that its outer diameter is smaller than the inner diameter of the housing recess 43b. That is, the accommodating recess 43b accommodates the valve body 45 so as to have a gap with respect to the inner wall surface thereof, and the periphery of the valve body 45 serves as a flow path for the cleaning liquid.

  A lid 48 that closes the opening is attached to the opening of the case portion 43a. The lid body 48 has the substantially cylindrical hose connection portion 42 protruding in the longitudinal direction. In the hose connection portion 42, an introduction passage 42 a for introducing the cleaning liquid into the housing recess 43 b of the case portion 43 a is formed, and the introduction passage 42 a opens at the center of the inner surface of the lid body 48.

  Here, on the lower surface of the wiper arm 12a shown in FIG. 2, a vehicle body side hose 40 extending from a vehicle body side washer pump (not shown) is disposed. The vehicle body side hose 40 is formed of an elastic material such as a resin material, rubber, or elastomer, and the end of the hose 40 extends from the insertion hole 31e provided in the center cover 31 near the end of the wiper arm 12a. 31 is inserted into the hose connection portion 42 of the washer nozzle 41 in the cover portion 31.

  In FIG. 6, an annular convex portion 48 a having a diameter smaller than the outer diameter of the valve body 45 is formed around the opening of the introduction passage 42 a on the inner surface of the lid body 48. The seal portion 45b of the valve body 45 is brought into close contact with the annular convex portion 48a by the urging force of the coil spring 46. That is, the introduction passage 42a is closed (closed) by the valve body 45, and the penetration of the cleaning liquid into the accommodation recess 43b is prevented. On the other hand, when the cleaning liquid is supplied through the vehicle body side hose 40 by the operation of the washer pump, the valve body 45 is retracted against the urging force of the coil spring 46 based on the supply pressure of the cleaning liquid, and the introduction passage 42a is opened. Opened (opened). As a result, the cleaning liquid is supplied into the housing recess 43b.

  The nozzle portion 44 has a communication hole 44a extending in the longitudinal direction, and the communication hole 44a communicates with an accommodation recess 43b in the case portion 43a. Further, four injections of a first injection hole 51a, a second injection hole 51b, a third injection hole 51c, and a fourth injection hole 51d for injecting the cleaning liquid are formed on the lower surface of the nozzle part 44 (lid part 18g). The holes are formed with a predetermined interval in the longitudinal direction of the washer nozzle 41. The injection holes 51a to 51d are arranged in a straight line along the longitudinal direction of the wiper blade 13a (the same direction as the longitudinal direction of the washer nozzle 41). Each of the injection holes 51a to 51d has a first injection hole 51a, a second injection hole 51b, a third injection hole 51c, and a fourth injection hole 51d from the longitudinal direction front end side to the base end side of the wiper blade 13a. They are arranged in the order.

  The first injection hole 51 a is provided in the vicinity of the tip of the nozzle portion 44, and the second injection hole 51 b is provided in the approximate center in the longitudinal direction of the nozzle portion 44. The third injection hole 51 c is provided at a position slightly closer to the base end side from the longitudinal center of the nozzle portion 44. These first to third injection holes 51a to 51c communicate with the communication hole 44a, respectively. The first injection hole 51 a extends toward the base end side of the wiper blade 13 a as it goes toward the lower surface of the nozzle portion 44. Further, the second and third injection holes 51 b and 51 c extend toward the tip end side of the wiper blade 13 a toward the lower surface of the nozzle portion 44. The second injection hole 51b extends in the width direction of the wiper blade 13a from the communication hole 44a through the inside of one of the pair of partition walls 18f (the rear partition wall 18f in FIG. 5). It is formed at a position shifted in the width direction from 44a.

  The fourth injection hole 51d is provided at the lower portion of the housing recess 43b, communicates with the housing recess 43b, and extends toward the base end side of the wiper blade 13a toward the lower surface of the lid portion 18g. Each of the injection holes 51a to 51d gradually expands in the longitudinal direction of the washer nozzle 41 toward the lower surface of the nozzle portion 44 so as to diffuse and inject the cleaning liquid (as the opening of the hole).

Next, the operation of the above embodiment will be described.
When the cleaning liquid is required on the wiping surface Ga and the washer pump is operated in a state where the wipers 11a and 11b are stopped, the cleaning liquid is supplied to the housing recess 43b and the communication hole 44a in the nozzle 41, and each jet Cleaning liquids W1, W2, W3, and W4 are ejected from the holes 51a to 51d. In conjunction with the operation of the washer pump, the wiper blades 13a and 13b start wiping operations from a stop position shown in FIG. 7 with a predetermined time delay from the operation of the washer pump. The wiper blades 13a and 13b reciprocate between the upper inversion positions Ua and Ub and the lower inversion positions Da and Db shown in FIG. The wiper blades 13a and 13b are wiped on the wiping surface Ga by moving in the width direction perpendicular to the longitudinal direction of the wiper blade 13a in a state where the entire longitudinal direction of the blade rubber 15 follows the wiping surface Ga. Is called.

  The first injection hole 51a follows the shape of the wiper blade 13a and injects the cleaning liquid W1 toward the base end 13c (longitudinal end near the pivot shaft P1). Further, the second and third injection holes 51b and 51c respectively inject the cleaning liquids W2 and W3 toward the tip end portion 13d side of the wiper blade 13a following the shape thereof. In the present embodiment, the injection direction of the second injection hole 51b is set to the rear side in the traveling direction when the wiper blade 13a moves from the lower inversion position Da to the upper inversion position Ua, and the third injection hole 51c. The injection direction is set to the front side in the traveling direction.

  FIG. 1 shows landing areas 52A, 52B, and 52C in which the cleaning liquids W1 to W3 sprayed from the first to third spray holes 51a to 51c respectively land on the wiping surface Ga. The landing areas 52A to 52C are set in a first wiping area A1 that is a wiping area of the wiper blade 13a on the passenger seat side. That is, the cleaning liquids W1 to W3 from the first to third injection holes 51a to 51c are supplied to the first wiping area A1. The central axis L1 of the cleaning liquid W1 injected from the first injection hole 51a and the central axes L2 and L3 of the cleaning liquids W2 and W3 injected from the second and third injection holes 51b and 51c are the wiper blades. 13a is crossed when viewed from the width direction (short direction).

  The fourth injection hole 51d follows the shape and injects the cleaning liquid W4 toward the base end portion 13c of the wiper blade 13a. Here, the cleaning liquid W4 from the fourth injection hole 51d is jetted to the outside in the longitudinal direction from the base end portion 13c of the wiper blade 13a, and the landing area 52D of the cleaning liquid W4 is The second wiper area A2, which is the wiper area of the wiper blade 13b on the driver's seat side, is set. Accordingly, the cleaning liquid W4 is supplied to the second wiping area A2 that is the wiping area of the wiper blade 13b on the driver's seat side.

  Further, the landing area 52D of the cleaning liquid W4 ejected from the fourth ejection hole 51d is stopped on the front side in the traveling direction of the wiper blade 13b when the wiper blade 13b starts wiping from the stop position (lower inversion position Db). The wiper blade 13b at the position is set to have an extension in the direction of the longitudinal axis F. Thereby, it is possible to spread the cleaning liquid W4 in the longitudinal direction of the wiper blade 13b.

  Further, as shown in FIG. 7, the central axis L4 of the cleaning liquid W4 injected from the fourth injection hole 51d is set so as to intersect the longitudinal axis F of the wiper blade 13b at the stop position, and the cleaning liquid W4 is The injection direction of the fourth injection hole 51d is set so as to be incident at an acute angle with respect to the longitudinal axis F (0 ° <incidence angle θ <90 °). As a result, the cleaning liquid W4 ejected from the fourth ejection hole 51d hits the acute angle with respect to the wiper blade 13b, is guided in the longitudinal direction along the wiper blade 13b, and spreads in the longitudinal direction. Further, since the cleaning liquid W4 hits the wiper blade 13b at an acute angle, the landing of the cleaning liquid W4 outside the stop position of the wiper blade 13b is blocked and the splashing of the cleaning liquid W4 is suppressed by hitting the acute angle. Can guide the spreading of the cleaning liquid W4 in the longitudinal direction along the wiper blade 13b.

  In the present embodiment, the washer nozzle 41 is provided only on the wiper blade 13a on the vehicle passenger seat side, not on the wiper blade 13b on the vehicle driver's seat side. On the contrary, in the configuration in which the washer nozzle 41 as shown in FIG. 8 is provided on the wiper blade 13b on the vehicle driver's seat side, for example, the traveling direction of the wiper blade 13b during operation from the upper reversal position Ub to the lower reversal position Db When the cleaning liquid W5 is supplied to the rear side, the cleaning liquid W5 adheres without being wiped off to the wiping surface Ga in front of the driver seat until the cleaning liquid W5 is wiped off by the wiper blade 13b that is reversed at the lower inversion position Db. It will be. Therefore, there is a possibility that the cleaning liquid W5 remaining without being wiped in front of the driver's seat may interfere with the driver's view. However, as in this embodiment, the washer nozzle 41 is provided on the wiper blade 13a on the vehicle passenger's seat side. Then, even if the wiper blade 13a on the passenger's seat side is not wiped rearward in the moving direction, the second wiping area A2 on the vehicle driver's seat side is located at the wiper blade 13b after the wiper blade 13a. Since it is wiped away, the driving view in front of the driver's seat is quickly secured without being disturbed by the cleaning liquid. As a result, it is possible to prevent the driving view in front of the driver's seat from being obstructed by the cleaning liquid W5 for a relatively long time.

  In the configuration in which the washer nozzle 41 is provided on the wiper blade 13b on the vehicle driver's seat side, when the washer pump is operated during the wiper wiping operation, the cleaning liquid is also supplied from the washer nozzle 41 to the first wiping area A1 on the passenger seat side. The cleaning liquid W6 is sprayed to the outside in the longitudinal direction from the front end portion 13e of the wiper blade 13b to be supplied. However, as shown in FIG. 8, the cleaning liquid sprays out above the wiping surface Ga in the vicinity of the upper inversion position Ub. There is a risk of flying over Ga and coming off the wiping area). Similarly, the cleaning liquid W5 may spray out to the side window side outside the driver seat of the wiping surface Ga, that is, beyond the pillar. In this regard, in this embodiment, the washer nozzle 41 is provided on the wiper blade 13a on the passenger's seat side, and the longitudinal direction is longer than the base end portion 13c of the wiper blade 13a so as to supply the cleaning liquid to the second wiping area A2 on the passenger seat side. Since the cleaning liquid W4 is sprayed to the outside, the above-described spray-out hardly occurs.

  Further, as in this embodiment, by providing the washer nozzle 41 on the wiper blade 13a rather than on the engine hood or the lower surface of the rear end of the engine hood, the washer nozzle 41 can be disposed at a position closer to the wiping surface Ga. It has become. Accordingly, since the cleaning liquids W1 to W4 can be supplied to the wiping surface Ga from a short distance, the influence of the traveling wind on the cleaning liquids W1 to W4 ejected from the washer nozzle 41 can be suppressed, and as a result, the wiping surface The cleaning liquids W1 to W4 can be more reliably supplied to Ga. Moreover, the washing | cleaning liquid which landed is wiped off more rapidly, and a quick visual field ensuring is possible.

Next, characteristic effects of the present embodiment will be described.
(1) Wiping the first wiping area A1 and the second wiping area A2 of the wiping surface Ga with the wiper blades 13a and 13b respectively connected to the tip ends of the pair of wiper arms 12a and 12b that are reciprocally rotated. Configured. One wiper blade 13a is provided with a washer nozzle 41 for supplying cleaning liquid to the wiping surface Ga. The washer nozzle 41 supplies cleaning liquids W1 to W3 to the first wiping area A1 of the wiper blade 13a. The cleaning liquid W4 can be sprayed to the outside in the longitudinal direction from the longitudinal end portion (base end portion 13c) of the wiper blade 13a so as to supply the cleaning liquid to the second wiping area A2 of the wiper blade 13b. Accordingly, the first wiping area A1 which is the wiping area of the wiper blade 13a itself, as well as the second wiping area A2 wiped by the wiper blade 13b, with the washer nozzle 41 provided on one wiper blade 13a. Also, the cleaning liquid W4 is supplied. For this reason, the washer nozzle 41 to the other wiper arm 12b and the wiper blade 13b and its associated parts (vehicle body side hose 40, etc.) and their assembly work man-hours can be reduced. The increase can be suppressed.

  (2) The first wiping area A1 is an area on the vehicle passenger seat side of the wiping surface Ga to be wiped by the wiper blade 13a of the passenger seat side wiper 11a, and the second wiping area A2 is the driver seat side wiper 11b. This is an area on the vehicle driver's seat side of the wiping surface Ga to be wiped by the wiper blade 13b. That is, in the present embodiment, the washer nozzle 41 is provided not on the vehicle driver's seat wiper blade 13b but on the vehicle passenger's seat wiper blade 13a. In contrast to this configuration, in the configuration in which the washer nozzle 41 is provided on the wiper blade 13b on the vehicle driver's seat side, when the cleaning liquid is supplied to the rear side in the traveling direction of the wiper blade 13b during the reciprocating operation, the cleaning liquid Remains wiped on the wiping surface Ga in front of the driver's seat until it is wiped by the wiper blade 13b that has been reversed. For this reason, there is a possibility that the cleaning liquid that has adhered to the front of the driver's seat without being wiped off may interfere with the driver's view. However, as in this embodiment, the washer nozzle 41 is placed on the wiper blade 13a on the passenger's seat side. If provided, the second wiping area A2 on the vehicle driver's seat side remains behind the wiper blade 13a from the vehicle driver's seat side even if the wiper blade 13a on the vehicle passenger's seat side is left behind without being wiped off in the moving direction. Since the wiper blade 13b wipes away, the driving field of view in front of the driver's seat is quickly secured without being obstructed by the cleaning liquid.

  Further, in the configuration in which the washer nozzle 41 is provided on the wiper blade 13a on the vehicle passenger seat side as in the present embodiment, the injection to the second wiping area A2 is the injection toward the base end portion 13c side of the wiper blade 13a. be able to. On the other hand, in the case where the washer nozzle 41 is provided toward the wiper blade 13b on the driver's seat side, when the washer pump is activated during the wiper wiping operation, the first wiping area A1 on the passenger seat side from the washer nozzle 41 is operated. In addition, the cleaning liquid is sprayed to the front end side of the wiper blade 13b in order to supply the cleaning liquid. The spray-out above the wiping surface Ga that may occur at this time (the cleaning liquid flying above the wiping surface Ga and leaving the wiping area) also causes the washer nozzle 41 to be wiped on the vehicle passenger seat side as in this embodiment. This can be prevented by the configuration provided in the blade 13a.

  (3) In the washer nozzle 41, the cleaning liquid W4 ejected from the fourth ejection hole 51d toward the second wiping area A2 of the wiper blade 13b is incident at an acute angle with respect to the longitudinal axis F of the wiper blade 13b at the stop position. The injection direction is set so that 0 ° <incident angle θ <90 °. As a result, the cleaning liquid W4 ejected from the fourth ejection holes 51d strikes the wiper blade 13b at an acute angle. Therefore, the cleaning liquid W4 is guided along the wiper blade 13b while suppressing the scattering of the cleaning liquid W4 at this time. Thus, the wiper blade 13b can be expanded in the longitudinal direction.

  (4) The washer nozzle 41 includes first to third injection holes 51a, 51b, 51c (first supply unit) for supplying the cleaning liquids W1 to W3 to the first wiping area A1, and the cleaning liquid to the second wiping area. A fourth injection hole 51d (second supply part) capable of injecting the cleaning liquid W4 to the outside in the longitudinal direction from the base end part 13c of the wiper blade 13a to be supplied to A2 is individually provided. As a result, the cleaning liquid can be reliably supplied from both the first and second wiping areas A2.

  (5) The landing area 52D of the cleaning liquid W4 ejected from the fourth ejection hole 51d is on the front side in the traveling direction of the wiper blade 13b when the wiper blade 13b starts wiping from the stop position (lower inversion position Db). The wiper blade 13b is set to expand in the longitudinal direction at the stop position. Thus, in the state where the wiper blade 13b is at the stop position, the cleaning liquid W4 sprayed from the washer nozzle 41 toward the second wiping area A2 spreads in the longitudinal direction of the wiper blade 13b, and therefore the cleaning liquid in the longitudinal direction of the wiper blade 13b. It becomes possible to spread W4.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the check valve portion 43 is provided in the washer nozzle 41, but the check valve portion 43 may be omitted.

In the above embodiment, the washer nozzle 41 is provided in the cover member 16, but other than this, for example, it may be provided outside the cover member 16.
-The number of the 1st-4th injection holes 51a-51d of the washer nozzle 41 of the above-mentioned embodiment may be suitably changed according to composition. Moreover, in the said embodiment, the injection hole as a 1st supply part is set to three (1st-3rd injection hole 51a-51c), and the injection hole as a 2nd supply part is set to 1 (4th injection hole). 51d), but may be appropriately changed according to the configuration.

  In the above embodiment, the washer nozzle 41 is configured as one nozzle unit having the check valve portion 43 and the first to fourth injection holes 51a to 51d, but is configured by connecting a plurality of nozzles. Also good. For example, a passenger seat side injection nozzle as a first supply unit that supplies the cleaning liquid to the first wiping area A1 and a driver seat side injection nozzle as a second supply unit that supplies the cleaning liquid to the second wiping area A2 are individually provided. It may be provided.

  Further, the nozzle (first supply unit) that injects into the first wiping area A1 on the passenger seat side may be a diffusion nozzle that can inject as a diffusion flow in which the cleaning liquid self-oscillates and diffuses in a predetermined direction. According to this configuration, for example, by setting the diffusion direction of the diffusion nozzle to be the direction along the longitudinal direction of the wiper blade 13a, it is possible to supply cleaning liquid more effectively over a wide range along the longitudinal direction of the wiper blade 13a. It becomes.

  Further, the nozzle (second supply unit) that injects the second wiping area A2 on the driver's seat may be a jet nozzle that can inject the cleaning liquid as a directional jet flow concentrated toward the second wiping area A2. . According to this configuration, for example, even when the washer nozzle provided on the wiper blade 13a and the second wiping area A2 are far apart, the cleaning liquid can be stably supplied to the second wiping area A2. . Further, as in the above embodiment, the ejection direction is set so that the cleaning liquid W4 ejected toward the second wiping area A2 is incident at an acute angle with respect to the longitudinal axis F of the wiper blade 13b at the stop position. In this case, by using the second supply part as a jet nozzle, the cleaning liquid W4 can be guided along the wiper blade 13b and can be surely expanded in the longitudinal direction of the wiper blade.

  In the above embodiment, the vehicle wiper device 1 is configured by the two wipers 11a and 11b. However, the present invention is not particularly limited thereto, and the number of wipers may be configured by three or more.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle wiper apparatus, 11a ... Passenger side wiper, 11b ... Driver side wiper, 12a ... Passenger side wiper arm (first wiper arm), 12b ... Driver's side wiper arm (second wiper arm), 13a ... Assistant Seat side wiper blade (first wiper blade), 13b... Driver seat side wiper blade (second wiper blade), 41 .. washer nozzle, 51a, 51b, 51c... First to third injection holes (first supply) Part), 51d ... 4th injection hole 51d (2nd supply part), 52A-52D ... Water landing area, A1 ... 1st wiping area, A2 ... 2nd wiping area, F ... Longitudinal axis, Ga ... Wiping surface, W1 to W6: Cleaning solution.

Claims (7)

For vehicles in which the first wiping area and the second wiping area of the wiping surface are respectively wiped by the first wiper blade and the second wiper blade respectively connected to the tip portions of the first wiper arm and the second wiper arm that are reciprocally rotated. In the wiper device,
The first wiper blade is provided with a washer nozzle for supplying cleaning liquid to the wiping surface,
The washer nozzle is capable of supplying cleaning liquid to the first wiping area and spraying the cleaning liquid outward in the longitudinal direction from the longitudinal end of the first wiper blade so as to supply the cleaning liquid to the second wiping area. A wiper device for a vehicle, characterized in that it is configured. The vehicle wiper device according to claim 1,
The first wiping area is an area on the vehicle passenger seat side of the wiping surface to be wiped by the first wiper blade,
The vehicle wiping apparatus, wherein the second wiping area is an area on the vehicle driver's seat side of the wiping surface to be wiped by the second wiper blade. The vehicle wiper device according to claim 1 or 2,
The washer nozzle has an injection direction set so that the cleaning liquid injected toward the second wiping area is incident at an acute angle with respect to the longitudinal axis of the second wiper blade at the stop position. A wiper device for a vehicle. In the vehicle wiper device according to any one of claims 1 to 3,
The washer nozzle is longer than at least one first supply unit for supplying cleaning liquid to the first wiping area and a longitudinal end of the first wiper blade to supply cleaning liquid to the second wiping area. A vehicle wiper device characterized by having at least one second supply unit capable of injecting a cleaning liquid outward in a direction. The vehicle wiper device according to claim 4,
When the second wiper blade starts wiping from the stop position, the landing area of the cleaning liquid sprayed from the second supply unit is the second wiper blade at the stop position on the front side in the traveling direction of the second wiper blade. A wiper device for a vehicle, wherein the wiper device is set to have a spread in the longitudinal direction. The vehicle wiper device according to claim 4 or 5,
The vehicle wiper device, wherein the second supply unit includes a jet nozzle capable of injecting the cleaning liquid as a directional jet flow concentrated toward the second wiping area. The vehicle wiper device according to any one of claims 4 to 6,
The wiper device for a vehicle according to claim 1, wherein the first supply unit includes a diffusion nozzle capable of spraying a cleaning liquid as a diffusion flow that self-oscillates and diffuses in a predetermined direction.

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