JP2007030565A - Wiper and wiper blade for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain a driving view well by preventing leakage of washing liquid to a wiped surface in a wiper blade and a wiper for a vehicle provided with a means for supplying the washing liquid to the wiped surface. <P>SOLUTION: In this wiper for a vehicle, a washer nozzle 18 installed in a cover member 16 (a center cover part 31) has a connection tube 44a, to which a car side pipe is to be connected to supply the washing liquid, and an injection hole 41d, and the cover member 16 is provided with shut-off structure using a valve element between the connection tube 44a and the injection hole 41d. The washing liquid supplying pressure generated when the washing liquid is force-fed from a washer pump opens the valve element so as to connect the connection tube 44a with the injection hole 41a, and jets the washing liquid, and on the other hand, when supply of the washing liquid is stopped, the valve element is closed so as to cut the communication between the connection tube 44a and the injection hole 41d, and leakage of the washing liquid from the injection hole 41d is thereby prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wiper blade and a vehicle wiper provided with means for supplying a cleaning liquid to a wiping surface.

Conventionally, when the dirt adhering to the window glass is wiped with a wiper blade, the cleaning liquid is supplied to the glass wiping surface by the operation of the washer device. In order to ensure that the cleaning liquid reaches the wiping surface, for example, as shown in Patent Document 1, a washer nozzle is attached to a wiper blade or a wiper arm, and the cleaning liquid is sprayed from a short distance toward the wiping surface. It has been known.
Japanese Utility Model Laid-Open No. 2-125666

  However, when the supply of the cleaning liquid is stopped, the cleaning liquid remaining in the pipe hose routed to the washer nozzle along the wiper blade or the wiper arm may leak from the washer nozzle. In particular, as shown in Patent Document 1, when a washer nozzle is attached to a reciprocatingly rotating member such as a wiper blade or a wiper arm, the centrifugal force generated by the rotating motion acts on the residual liquid in the piping hose. Residual liquid in the hose collects in the washer nozzle and easily leaks from the nozzle.

  When the cleaning liquid leaks from the washer nozzle in this way, when the cleaning liquid adheres to the wiping surface prior to wiping the wiper blade, the leaked cleaning liquid is wiped by the wiper blade, so that there is no particular problem. On the other hand, during the reversing operation of the wiper blade, since the leaked cleaning liquid adheres to the wiping surface after wiping with the wiper blade, until the operation is reversed next and wiped with the wiper blade, There was a problem that the cleaning liquid remained on the wiping surface and obstructed driving vision.

  Also, if the cleaning liquid leaks from the washer nozzle, the amount of cleaning liquid in the piping hose is reduced, so the next time the cleaning liquid is injected, the piping hose is filled with the cleaning liquid before injection. There has been a problem that the responsiveness from the operation of supplying the cleaning liquid to the time when the cleaning liquid is jetted deteriorates.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to prevent the cleaning liquid from leaking to the wiping surface in the wiper blade and the vehicle wiper having means for supplying the cleaning liquid to the wiping surface. It is to prevent and maintain a good driving field of view.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a long blade for wiping the wiping surface by a wiper arm reciprocally rotated and a holding member connected to the tip of the wiper arm. A wiper blade that holds a rubber, and one or a plurality of washer nozzles that are attached to the wiper blade or the wiper arm and that supply cleaning liquid pressure-fed via a piping member from a pump device to the wiping surface through the injection hole The washer nozzle has a connection part to which the piping member is connected and the injection hole, and the connection is made by the supply pressure of the cleaning liquid when the cleaning liquid is pumped The valve is opened so as to communicate with the injection hole, and when the supply of the cleaning liquid is stopped, the valve is closed so as to block communication between the connection part and the injection hole. Further comprising a water-stop structure having a body and spirit thereof.

  According to a second aspect of the present invention, there is provided a long blade rubber for wiping the wiping surface, a holding member for holding the blade rubber, connected to the distal end of a reciprocatingly rotating wiper arm, and a pump device. A wiper blade comprising one or a plurality of washer nozzles for supplying a cleaning liquid pumped through a piping member to the wiping surface through an injection hole, wherein the washer nozzle is connected to the piping member. When the supply of the cleaning liquid is stopped, the valve is opened to communicate the connection part and the injection hole by the supply pressure of the cleaning liquid when the cleaning liquid is pumped. The gist of the invention is that it includes a water stop structure having a valve body that closes the communication portion to block communication between the connection portion and the injection hole.

  According to a third aspect of the present invention, in the wiper blade according to the second aspect, the wiper blade includes a cover member that is formed in a shape along a longitudinal direction of the wiper blade and accommodates the holding member. The gist is that a part or all of the cover member is housed and mounted.

  According to a fourth aspect of the present invention, in the wiper blade according to the third aspect, the holding member is a lever assembly in which a plurality of levers are hierarchically coupled to a primary lever that is coupled to the tip of the wiper arm. The gist of the cover member is to accommodate the lever assembly.

  The gist of a fifth aspect of the invention is that the wiper blade according to the third or fourth aspect includes that the piping member extending to the washer nozzle is accommodated in the cover member.

  According to a sixth aspect of the present invention, in the wiper blade according to any one of the third to fifth aspects, the cover member travels on one side when the vehicle travels in a cross-sectional view orthogonal to the longitudinal direction. It has a fin part that generates a pressing force that presses the blade rubber toward the wiping surface when receiving wind, and the gist of the washer nozzle is disposed on the other side in the cross-sectional view. .

  The invention according to claim 7 is the wiper blade according to claim 2, wherein the holding member is a lever assembly in which a plurality of levers are hierarchically connected to a primary lever that is connected to the tip of the wiper arm. The gist of the washer nozzle is that it is mounted on at least one lever constituting the lever assembly.

  The invention according to claim 8 is the wiper blade according to claim 7, wherein the washer nozzle is at least one of the levers holding the blade rubber among the plurality of levers constituting the lever assembly. The gist of this is to be mounted on.

  The invention according to claim 9 is the wiper blade according to any one of claims 2 to 8, wherein the washer nozzle is a plurality of the injection holes for injecting the cleaning liquid in a longitudinal direction of the wiper blade. The gist is that the valve body is arranged before the flow path is branched to each injection hole.

  A tenth aspect of the present invention is the wiper blade according to any one of the second to ninth aspects, wherein the washer nozzle is closer to a moving direction at the start of wiping than the blade rubber at the wiper blade stop position. The gist is to be arranged.

(Function)
According to the first aspect of the present invention, the washer nozzle attached to the wiper arm or the wiper blade has the connection portion and the injection hole to which the piping member for supplying the cleaning liquid is connected, and the connection portion and the injection hole. A water stop structure using a valve body is provided between the two. In other words, when the cleaning liquid is pumped from the pump device, the cleaning liquid supply pressure opens the connecting portion and the injection hole to communicate with each other, and the cleaning liquid is injected from the injection hole, while the supply of the cleaning liquid is stopped. The valve is closed to cut off the communication between the nozzle and the injection hole to prevent the cleaning liquid from leaking from the injection hole. This prevents the leakage of the cleaning liquid remaining in the piping member from adhering to the wiping surface. In particular, even when the wiper arm or wiper blade performs a wiping operation in a state where supply of the cleaning liquid is stopped and liquid leakage is likely to occur, liquid leakage to the wiping surface can be reliably prevented.

  According to the second aspect of the present invention, the washer nozzle attached to the wiper blade has the connection portion and the injection hole to which the piping member for supplying the cleaning liquid is connected, and the connection portion and the injection hole. It has a water stop structure using a valve element in between. In other words, when the cleaning liquid is pumped from the pump device, the cleaning liquid supply pressure opens the connecting portion and the injection hole to communicate with each other, and the cleaning liquid is injected from the injection hole, while the supply of the cleaning liquid is stopped. The valve is closed to cut off the communication between the nozzle and the injection hole to prevent the cleaning liquid from leaking from the injection hole. This prevents the leakage of the cleaning liquid remaining in the piping member from adhering to the wiping surface. In particular, even when the wiper blade performs a wiping operation in a state where supply of the cleaning liquid is stopped and liquid leakage is likely to occur, liquid leakage to the wiping surface can be reliably prevented.

  According to the third aspect of the present invention, the wiper blade is provided with a cover member that is formed in a shape along the longitudinal direction thereof and accommodates the holding member, and the washer nozzle is partially or relative to the cover member. Everything is housed and installed. As a result, the washer nozzle is housed in a cover member that is provided to improve the appearance by accommodating the holding member and the like, so that the washer nozzle can be made inconspicuous from the outside, and the appearance is not impaired. In addition, the washer nozzle can be protected from ultraviolet rays and the like, and early deterioration of the washer nozzle is prevented.

  According to the fourth aspect of the present invention, the holding member is a lever assembly in which a plurality of levers are hierarchically connected to a primary lever that is connected to the distal end portion of the wiper arm, and the cover member houses the lever assembly. . Thus, covering the lever assembly in which a plurality of levers are hierarchically connected with the cover member has an effect of suppressing the generation of wind noise caused by traveling wind passing between the lever assemblies, in particular, as well as improving the appearance design.

  According to the fifth aspect of the present invention, the piping member extending to the washer nozzle is accommodated in the cover member. Thereby, this piping member can also be made inconspicuous from the outside, and the appearance is not impaired. In addition, the piping member can be protected from ultraviolet rays and the like, and early deterioration of the piping member is prevented.

  According to the sixth aspect of the present invention, the cover member has a pressing force that presses the blade rubber toward the wiping surface when receiving a traveling wind generated when the vehicle travels on one side in a cross-sectional view orthogonal to the longitudinal direction. The fin part which produces | generates is provided, and a washer nozzle is arrange | positioned at the other side (opposite side to a fin part). In other words, because the shape of the fin part is restricted by the slope to obtain the pressing force, the washer nozzle is placed on the opposite side of the fin part, so that the cover member is not unnecessarily large. A typical washer nozzle arrangement is possible.

  According to the seventh aspect of the present invention, the washer nozzle is attached to at least one lever constituting the lever assembly. As a result, the lever constituting the lever assembly rotates following the curved shape of the wiping surface, so that the direction in which the cleaning liquid is ejected from the nozzle attached to the lever also changes according to the rotation, and the cleaning liquid is applied to the wiping surface. The injection angle can be stabilized.

  According to the invention described in claim 8, the washer nozzle is mounted on at least one of the levers holding the blade rubber among the plurality of levers constituting the lever assembly. That is, since the washer nozzle is attached to the lever that is closest to the wiping surface among the plurality of levers constituting the lever assembly, the cleaning liquid can be ejected at a more stable ejection angle.

  According to the ninth aspect of the present invention, the washer nozzle has a plurality of injection holes for injecting the cleaning liquid in the longitudinal direction of the wiper blade, and the valve body is disposed before the flow path is branched to each of the injection holes. Is done. Thereby, while it is possible to supply the cleaning liquid over a wide range in the longitudinal direction with one nozzle, liquid leakage from each injection hole can be prevented with one valve body, and the configuration of the washer nozzle is not complicated.

  According to the tenth aspect of the present invention, the washer nozzle is disposed closer to the traveling direction at the start of wiping than the blade rubber at the wiper blade stop position. That is, since the cleaning liquid is supplied immediately before the blade rubber that has started wiping, the wiping surface can be removed quickly, and sliding contact of the blade rubber in the dry state of the wiping surface is also prevented.

  Therefore, according to the present invention, in the wiper blade and the vehicle wiper provided with means for supplying the cleaning liquid to the wiping surface, it is possible to prevent the cleaning liquid from leaking to the wiping surface and maintain good driving visibility.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 shows a vehicle wiper 11 for wiping off dirt, raindrops, and the like attached to a wiping surface 1a of a windshield (windshield glass) 1 of an automobile.

  The vehicle wiper 11 includes a wiper arm 12 and a wiper blade 13. The wiper arm 12 is fixed to a pivot shaft (not shown) whose base end is reciprocally rotated at a predetermined angle by a driving force of a wiper motor (not shown), and a wiper blade 13 is rotated at the distal end of the arm 12. Connected as possible. The wiper arm 12 is provided with a spring (not shown) for pressing the wiper blade 13 against the wiping surface 1a. The wiper blade 13 performs the wiping operation of the wiping surface 1a by the reciprocating rotation of the wiper arm 12 as the pivot shaft reciprocates.

As shown in FIG. 3, the wiper blade 13 includes a lever assembly 14, a blade rubber 15, a cover member 16, a connecting member 17, and a washer nozzle 18.
The lever assembly 14 includes three levers each formed by pressing a metal plate, that is, a primary lever 21 and two secondary levers 22 rotatably connected to both longitudinal ends of the primary lever 21. It is configured in a tournament shape (hierarchical).

  The primary lever 21 has a holder portion 21a at the center in the longitudinal direction and arm portions 21b extending in the longitudinal direction from both sides of the holder portion 21a. The holder part 21a has an opening 21c at the top, and the tip of the wiper arm 12 is inserted through the opening 21c. A connecting member 17 is rotatably attached to the holder portion 21a, and the tip of the wiper arm 12 is detachably attached to the connecting member 17. The arm portion 21b is formed in a mountain fold shape (substantially U-shaped in cross section) with an opening on the wiping surface 1a side in a cross-sectional view orthogonal to the longitudinal direction.

  Similar to the arm portion 21 b of the primary lever 21, the secondary lever 22 is formed in a mountain fold shape (substantially U-shaped in cross section) opened on the wiping surface 1 a side. 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 downward (wiping surface 1a side) 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 of a rubber material and grip the blade rubber 15 for wiping in contact with the wiping surface 1a as shown in FIG. 2 at a predetermined interval in the longitudinal direction. Incidentally, a long backing (not shown) is attached to the blade rubber 15 along the longitudinal direction of the rubber 15 so as to disperse the pressing force to the wiping surface 1a received from the gripping portion 22a in the longitudinal direction. Has been.

  As shown in FIGS. 1 to 3, the cover member 16 is provided so as to cover the lever assembly 14 and extend to both ends of the blade rubber 15. The cover member 16 includes 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.

  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. 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, and the tip of the wiper arm 12 extends from the opening portion 31c. Part is inserted. The arm accommodating portion 31b is formed in a mountain fold shape (substantially U-shaped in cross section) with an opening on the wiping surface 1a side in a cross sectional view orthogonal to the longitudinal direction.

  The side cover part 32 is mounted so that its base end part is rotatable with respect to both end parts of the primary lever 21 (tip part of the arm part 21b). The side cover part 32 is formed in a mountain fold shape (substantially U-shaped in cross section) with an opening on the wiping surface 1a side, like the arm housing part 31b of the center cover part 31, and the height of the top part increases from the base end part toward the tip part. 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 rotates centering | focusing on the base end part with which 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 supposed to be.

  Also, the arm housing portion 31b of the center cover portion 31 and the wall portion on the vehicle front side of each side cover portion 32 receive a pressing force that presses the blade rubber 15 toward the wiping surface 1a when receiving the traveling wind generated when the vehicle travels. The fin portions 31d and 32b to be generated 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.

  As shown in FIG. 4, the center cover portion 31 (holder accommodating portion 31a) has a central portion in the longitudinal direction opposite to the side on which the fin portion 31d is provided (the rear side of the vehicle, that is, the wiper blade 13 at the stop position). A nozzle mounting portion 31e is provided on the start traveling direction side), and the washer nozzle 18 is mounted on the nozzle mounting portion 31e. The number of washer nozzles 18 is one in the present embodiment, and is elastically held so as to be detachable (replaceable) by a plurality of engagement pieces 31f provided in the nozzle mounting portion 31e as shown in FIG.

As shown in FIGS. 5 to 7, the washer nozzle 18 is configured using a nozzle body 41, a valve body 42, a coil spring 43, and a lid body 44.
The nozzle body 41 has a bottomed flat cylindrical shape made of a resin material, specifically a pair of flat plate portions 41a that are parallel to each other, an arc portion 41b that connects ends of the opposed flat plate portions 41a, a flat plate portion 41a, and an arc portion The bottom part 41c which closes the end of the cylindrical body which consists of 41b is comprised by the bottomed flat cylindrical shape. The center part 31 of the nozzle body 41 is directed so that the bottom 41c side is directed downward, and the flat surface direction of the flat plate portion 41a is the longitudinal direction of the wiper blade 13 (the arc portion 41b faces the longitudinal direction of the wiper blade 13). It is attached to.

  41 d of injection holes for injecting the washing | cleaning liquid W are each formed in the corner | angular part of each circular arc part 41b lower end center and the bottom part 41c outer periphery in the nozzle body 41. As shown in FIG. The injection holes 41d are formed in a slit shape that is long in the same direction so as to disperse and inject the cleaning liquid W with directivity in the longitudinal direction. Incidentally, a pair of guide walls 41e for guiding the cleaning liquid W in the same direction are provided on both sides of the peripheral edge of the injection hole 41d in the short direction so that the cleaning liquid W is dispersed with directivity in the longitudinal direction.

  Inside the nozzle body 41, an accommodating recess 41f having a circular cross section for accommodating the valve body 42 and the coil spring 43 is formed. The housing recess 41f communicates with each injection hole 41d. The inner diameter of the housing recess 41f is set to be larger than the outer diameter of the valve body 42 (base 45 and seal portion 46). In other words, the valve body 42 is housed in the housing recess 41 f so as to have a gap with respect to the inner wall surface, and the periphery of the valve body 42 is used as a flow path for the cleaning liquid W.

  The valve body 42 includes a base portion 45 formed in a substantially cylindrical shape with a resin material and a seal portion 46 formed in a substantially cylindrical shape with an elastic material such as rubber or elastomer. The outer diameters of the base portion 45 and the seal portion 46 are equal and set to be smaller than the inner diameter of the housing recess 41f. A substantially cylindrical fitting convex portion 45a is formed at the central portion of one end surface in the axial direction of the base portion 45, and a fitting concave portion 46a into which the fitting convex portion 45a is inserted into the other axial end surface of the seal portion 46. Is formed. The valve body 42 in which the seal portion 46 is attached to the base portion 45 is constituted by the fitting connection of the fitting concave portion 46a and the fitting convex portion 45a.

  Further, an annular spring mounting groove 45 b is formed on the other axial end surface of the base portion 45. One end of the coil spring 43 is fitted into the spring mounting groove 45b. The other end of the coil spring 43 is externally fitted to a mounting portion 41 g formed on the inner wall surface of the housing recess 41 f in the bottom portion 41 c of the nozzle body 41. The coil spring 43 presses the valve body 42 toward the opening side (lid body 44) of the nozzle body 41 and also supports the valve body 42.

  A lid 44 that closes the opening is attached to the opening of the nozzle body 41. The lid 44 has a substantially cylindrical connecting pipe 44a that protrudes in one longitudinal direction. As shown in FIG. 4, the connecting pipe 44 a protrudes outside the center cover portion 31. An introduction passage 44 b for introducing the cleaning liquid W into the housing recess 41 f of the nozzle body 41 is formed in the connection pipe 44 a, and the introduction passage 44 b opens at the center of the inner surface of the lid body 44.

  Here, on the lower surface of the wiper arm 12 shown in FIG. 1, a vehicle body side pipe 40 extending from a washer pump (not shown) as a pump device provided on the vehicle body side is disposed. The vehicle body side pipe 40 is made of an elastic material such as a resin material, rubber, or elastomer, and the tip of the pipe 40 is fitted into the connection pipe 44 a of the washer nozzle 18. In this case, since the washer nozzle 18 is located in the vicinity of the connecting portion of the wiper arm 12, the connection with the vehicle body side pipe 40 is facilitated.

  The opening 44c of the introduction passage 44b in the lid 44 has a circular shape, and an annular convex portion 44d is formed around the opening 44c. The annular convex portion 44d is formed with a diameter smaller than the outer diameter of the valve body 42 (seal portion 46). The seal portion 46 of the valve body 42 is in close contact with the annular convex portion 44 d by the urging force of the coil spring 43. That is, the opening 44c of the introduction passage 44b is closed (valve closed) by the valve body 42, and the cleaning liquid W is prevented from entering the housing recess 41f. On the other hand, when the cleaning liquid W is supplied through the vehicle body side pipe 40 by the operation of the washer pump, the valve body 42 retreats against the biasing force of the coil spring 43 based on the supply pressure of the cleaning liquid W, and the introduction passage The opening 44c of 44b is opened (opened). As a result, the cleaning liquid W is supplied into the housing recess 41f, and the cleaning liquid W is ejected from the ejection holes 41d.

  In the vehicle wiper 11 having such a configuration, the wiper blade 13 is disposed at the lower end of the windshield 1 in the stopped state. That is, the fin portions 31 d and 32 b of the cover member 16 are located on the front side of the wiper blade 13 and the side where the washer nozzle 18 is disposed is located on the rear side of the wiper blade 13.

  When the cleaning liquid W is required on the wiping surface 1a and the washer pump is operated, the cleaning liquid W pumped from the tank by the washer pump is pumped from the vehicle body side pipe 40 to the washer nozzle 18. At this time, the cleaning liquid W previously injected with the cleaning liquid W is filled in the body side pipe 40 from the washer pump to the washer nozzle 18 and between the introduction passage 44b of the washer nozzle 18 and the valve body 42. ing. In the washer nozzle 18, when the valve body 42 is immediately retracted based on the supply pressure of the cleaning liquid W and the opening 44 c of the introduction passage 44 b is opened, the cleaning liquid W is supplied to the housing recess 41 f in the nozzle 18. The cleaning liquid W is rapidly and dispersedly injected from each injection hole 41d with directivity to both sides in the longitudinal direction. Then, the wiping operation of the wiper blade 13 is started in conjunction with the operation of the washer pump.

  At this time, since the washer nozzle 18 is disposed at a position close to the wiping surface 1a, the cleaning liquid W is sprayed to the wiping surface 1a from a very short distance, and is sprayed outward from the windshield 1 by the traveling wind. So-called spray-out can be prevented, and the cleaning liquid W can be accurately supplied to the target landing point. In addition, since the cleaning liquid W is supplied to the wiper blade 13 on the rear side of the vehicle, that is, on the moving direction side of the blade rubber 15 at the start of wiping, the wiping surface 1a can be quickly removed, and the wiping surface 1a can be dried. The sliding contact of the blade rubber 15 in the state is also prevented.

  When the cleaning liquid W is no longer required on the wiping surface 1a and the operation of the washer pump is stopped, the supply of the cleaning liquid W to the washer nozzle 18 is stopped. In this case, the supply pressure of the cleaning liquid W applied to the valve body 42 decreases, and the valve body 42 protrudes due to the urging force of the coil spring 43, and the annular convex portion 44d provided around the opening 44c of the introduction passage 44b. Press contact. As a result, the opening 44c of the introduction passage 44b is closed, and the intrusion of the cleaning liquid W into the accommodation recess 41f is prevented. That is, the cleaning liquid W may remain in the vehicle body side pipe 40, but the residual liquid is prevented from leaking from the washer nozzle 18, and the residual liquid is supplied when the cleaning liquid is supplied next time. By this, the cleaning liquid W is quickly ejected.

Next, characteristic actions and effects of the present embodiment will be described.
(1) The washer nozzle 18 attached to the cover member 16 (center cover portion 31) includes a connection pipe 44a to which a vehicle body side pipe 40 for supplying the cleaning liquid W is connected and an injection hole 41d, and a connection pipe. The water stop structure using the valve body 42 is provided between 44a and the injection hole 41d. That is, when the cleaning liquid W is pumped from the washer pump, the connection pipe 44a and the injection hole 41d are opened by the supply pressure of the cleaning liquid W, and the cleaning liquid W is injected from the injection hole 41d. When the supply is stopped, the connection pipe 44a and the injection hole 41d are closed to prevent communication, and leakage of the cleaning liquid W from the injection hole 41d is prevented. Thereby, it is possible to prevent the leakage of the cleaning liquid W remaining in the vehicle body side pipe 40 from adhering to the wiping surface 1a. In particular, the wiper blade 13 performs the wiping operation in a state where the supply of the cleaning liquid W is stopped, and the liquid leakage occurs. Even in an easy situation, liquid leakage to the wiping surface 1a can be reliably prevented, and driving visibility can be maintained well.

  (2) The washer nozzle 18 is mounted and accommodated on the cover member 16 (center cover portion 31) except for the connection pipe 44a. Incidentally, the cover member 16 (the center cover portion 31 and the side cover portion 32) accommodates and covers the lever assembly 14 to which the plurality of levers 21 and 22 are hierarchically connected, so that only the appearance design of the wiper blade 13 is improved. In addition, the generation of wind noise caused by the traveling wind passing between the lever assemblies 14 is suppressed. By storing the washer nozzle 18 in the cover member 16 that accommodates the lever assembly 14 and the like, the washer nozzle 18 can be made inconspicuous from the outside, and the appearance is not impaired. In addition, the washer nozzle 18 can be protected from ultraviolet rays and the like, and early deterioration of the washer nozzle 18 can be prevented. In addition, by providing an insertion hole for inserting the vehicle body side pipe 40 in the connecting pipe 44a portion of the cover member 16, the connecting pipe 44a portion can be accommodated and covered inside the cover member 16.

  (3) The center cover portion 31 and the side cover portion 32 constituting the cover member 16 have a wiping surface for the blade rubber 15 when receiving a traveling wind generated when the vehicle travels on one side in a cross-sectional view orthogonal to the longitudinal direction. Fin portions 31d and 32b that generate a pressing force to be pressed to the side are provided. In the center cover portion 31, the washer nozzle 18 is disposed on the other side (the side opposite to the fin portion 31d). That is, since the shape of the fin portion 31d is restricted by an inclined surface for obtaining a pressing force, the cover member 16 is unnecessarily enlarged by disposing the washer nozzle 18 on the side opposite to the fin portion 31d. The rational washer nozzle 18 is not disposed.

  (4) The washer nozzle 18 has a plurality (a pair) of injection holes 41d for injecting the cleaning liquid W in the longitudinal direction of the wiper blade 13, and the valve element 42 is disposed before the flow path is branched to each of the injection holes 41d. Has been. Thus, while the single nozzle 18 can supply the cleaning liquid W over a wide range in the longitudinal direction, the single valve body 42 can prevent liquid leakage from each injection hole 41d, and the configuration of the washer nozzle 18 Do not complicate.

  (5) The washer nozzle 18 is disposed closer to the moving direction at the start of wiping than the blade rubber 15 at the stop position of the wiper blade 13. That is, since the cleaning liquid W is supplied immediately before the blade rubber 15 that has started wiping, the wiping surface 1a can be quickly removed, and the blade rubber 15 can be slid in the dry state of the wiping surface 1a. Therefore, it is possible to contribute to extending the life of the blade rubber 15.

The embodiment of the present invention may be modified as follows.
In the above embodiment, the cover member 16 is composed of three parts, the center cover part 31 and the two side cover parts 32, but may be composed of two or less parts or four or more parts.

  For example, as shown in FIG. 8, a cover member 33 made of one component in which the center cover portion 31 and the two side cover portions 32 are integrated may be used. Incidentally, the cover member 33 has a holder accommodating portion 33a in the central portion in the longitudinal direction, and has arm accommodating portions 33b extending from both ends of the cover member 33 to the ends of the blade rubber 15. The holder accommodating portion 33a is provided with an opening 33c for inserting the distal end portion of the wiper arm 12, and a grip portion 33d for grasping the blade rubber 15 is provided at the distal end portion of the arm accommodating portion 33b. Each arm accommodating portion 33b is provided with a fin portion 33e. Even in this case, the washer nozzle 18 is mounted on the opposite side of the cover member 33 from the fin portion 33e (the vehicle rear side, that is, the traveling direction side at the start of wiping).

Moreover, although the cover member 16 of the said embodiment had the fin parts 31d and 32b, you may implement in the cover member which does not have a fin part.
In the above embodiment, the washer nozzle 18 is disposed at the center in the longitudinal direction of the cover member 16 (center cover portion 31). However, the position of the washer nozzle 18 is long so that the arrangement space, the injection range, and the like are suitable. The direction may be changed.

In the above embodiment, only one washer nozzle 18 is mounted, but a plurality of two or more washer nozzles 18 may be used.
For example, as shown in FIG. 9, three washer nozzles (washer nozzles 18 and 18a) may be used. The washer nozzle 18 having the same configuration as that of the above embodiment is mounted on the base end side of each side cover portion 32. In this case, the entire washer nozzle 18 including the connection pipe 44 a is accommodated in the side cover portion 32. On the other hand, the washer nozzle 18a has substantially the same configuration as the washer nozzle 18 of the above-described embodiment, and further includes a side connecting pipe 47 that branches to both sides in the longitudinal direction, and is arranged at the center in the longitudinal direction of the center cover portion 31. The Then, the side connecting pipe 47 of the washer nozzle 18a located in the center and the connecting pipe 44a of the washer nozzle 18a located on both sides are connected by the connecting pipe 48, respectively, and the cleaning liquid W fed by pressure through the vehicle body side pipe 40 is supplied. The central washer nozzle 18a is supplied to the washer nozzles 18 on both sides via the nozzle 18a. In this way, the cleaning liquid W can be supplied over a wide range in the longitudinal direction of the wiper blade 13.

  Incidentally, the connection pipe 48 is formed of an elastic material such as a resin material, rubber, or elastomer, and is accommodated in the cover member 16 as shown in FIG. Thereby, the connection pipe 48 can be made inconspicuous from the outside, and the appearance is not impaired. Further, the connection pipe 48 can be protected from ultraviolet rays and the like, and early deterioration of the connection pipe 48 can be prevented.

  Further, in this case, a pipe holding piece 31g for holding the connection pipe 48 may be provided on the inner wall surface of the center cover portion 31, and the pipe 48 may be easily attached while the connection pipe 48 is sufficiently held. Further, in this case, the pipe holding piece 31g may be structured to prevent interference between the connection pipe 48 and the lever assembly 14 (lever 21, 22). In this way, the connection pipe 48 can be prevented from coming into contact with the lever assembly 14 and hindering the lever operation, and the connection pipe 48 is engaged between the levers 21 and 22 during the lever operation. 48 damage can be prevented.

  In the above embodiment, the washer nozzle 18 is attached to the cover member 16, but the washer nozzle 18 may be attached to a component of the wiper blade 13 other than the cover member 16.

  For example, as shown in FIG. 11, a washer nozzle 18 may be attached to each of the secondary levers 22 constituting the lever assembly 14. Thereby, since the lever 22 rotates following the curved shape of the wiping surface 1a, the jetting direction of the cleaning liquid W of the nozzle 18 attached to the lever 22 also changes according to the rotation, and the cleaning liquid for the wiping surface 1a is changed. The injection angle of W can be stabilized. Moreover, since the lever 22 holds the blade rubber 15 and is closest to the wiping surface 1a, the washing liquid W can be sprayed at a more stable spray angle by mounting the washer nozzle 18 on such a lever 22. It has become. Incidentally, in the configuration in which the washer nozzle 18 is attached to the lever assembly 14, the cover member 16 can be omitted as shown in FIG.

In addition, the washer nozzle 18 may be mounted not on the wiper blade 13 but on the tip of the wiper arm 12 as shown in FIG.
In the above embodiment, the lever assembly 14 including the three levers 21 and 22 is used as the holding member that holds the blade rubber 15, but the configuration of the holding member is not limited to this, and the number of levers May be changed as appropriate. In this case, the number of levers may be one. In addition, a holding member that is provided with a connecting portion for connecting to the wiper arm 12 in the longitudinal center portion of the backing without using a lever and is configured to increase the rigidity of the backing so that the blade rubber 15 is held by the backing. Including.

It is a perspective view which shows the wiper for vehicles in this Embodiment. (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 an enlarged plan view of the wiper blade to which the washer nozzle is attached. It is a perspective view of a washer nozzle. It is the partial cross section perspective view seen from the slanting lower part of the washer nozzle. It is the disassembled perspective view seen from the diagonal lower part of the washer nozzle. It is a disassembled perspective view of the wiper blade in another example. It is a schematic block diagram of the wiper blade in another example. It is a cross-sectional view of the wiper blade in another example. It is a schematic block diagram of the wiper for vehicles in another example. It is a schematic block diagram of the wiper for vehicles in another example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1a ... Wiping surface, 12 ... Wiper arm, 13 ... Wiper blade, 14 ... Lever assembly as holding member, 15 ... Blade rubber, 16 ... Cover member, 18 ... Washer nozzle, 18a ... Washer nozzle, 21 ... Primary lever as lever 22 ... Secondary lever as a lever, 31 ... Center cover part, 31d ... Fin part, 32 ... Side cover part, 32b ... Fin part, 40 ... Car body side pipe as piping member, 41d ... Injection hole, 42 ... Valve body 44a ... Connection pipes as connection parts, 48 ... Connection pipes as piping members, W ... Cleaning fluid.

Claims (10)

A wiper arm reciprocally rotated;
A wiper blade formed by holding a long blade rubber for wiping the wiping surface by a holding member connected to the tip of the wiper arm;
A vehicle wiper that is mounted on the wiper blade or the wiper arm and includes one or a plurality of washer nozzles that supply the cleaning liquid, which is pumped from a pump device through a piping member, to the wiping surface. ,
The washer nozzle has a connection portion to which the piping member is connected and the injection hole, and is opened to communicate the connection portion and the injection hole by a supply pressure of the cleaning liquid when the cleaning liquid is pumped. On the other hand, a vehicle wiper comprising a water stop structure having a valve body that closes to shut off communication between the connection portion and the injection hole when the supply of the cleaning liquid is stopped. A long blade rubber to wipe the wiping surface;
A holding member that is connected to the tip of a wiper arm that is reciprocally rotated and holds the blade rubber;
A wiper blade comprising one or a plurality of washer nozzles for supplying a cleaning liquid pumped from a pump device through a piping member to the wiping surface through an injection hole,
The washer nozzle has a connection portion to which the piping member is connected and the injection hole, and is opened to communicate the connection portion and the injection hole by a supply pressure of the cleaning liquid when the cleaning liquid is pumped. On the other hand, a wiper blade comprising a water stop structure having a valve body that closes to cut off communication between the connection portion and the injection hole when the supply of the cleaning liquid is stopped. The wiper blade according to claim 2,
A cover member that is formed in a shape along the longitudinal direction of the wiper blade and accommodates the holding member;
The wiper blade according to claim 1, wherein a part or all of the washer nozzle is housed and attached to the cover member. The wiper blade according to claim 3, wherein
The holding member is a lever assembly in which a plurality of levers are hierarchically connected to a primary lever that is connected to the tip of the wiper arm.
The wiper blade according to claim 1, wherein the cover member accommodates the lever assembly. The wiper blade according to claim 3 or 4,
The wiper blade characterized in that the cover member accommodates the piping member extending to the washer nozzle. The wiper blade according to any one of claims 3 to 5,
The cover member has a fin portion that generates a pressing force that presses the blade rubber toward the wiping surface when receiving a traveling wind generated when the vehicle travels on one side in a cross-sectional view orthogonal to the longitudinal direction. Yes,
The wiper blade according to claim 1, wherein the washer nozzle is disposed on the other side in the cross-sectional view. The wiper blade according to claim 2,
The holding member is a lever assembly in which a plurality of levers are hierarchically connected to a primary lever that is connected to the tip of the wiper arm.
The wiper blade according to claim 1, wherein the washer nozzle is attached to at least one lever constituting the lever assembly. The wiper blade according to claim 7, wherein
The wiper blade, wherein the washer nozzle is attached to at least one of the levers holding the blade rubber among the plurality of levers constituting the lever assembly. The wiper blade according to any one of claims 2 to 8,
The washer nozzle has a plurality of the injection holes for injecting the cleaning liquid in the longitudinal direction of the wiper blade, and the valve body is arranged before the flow path is branched to each injection hole. Wiper blade. The wiper blade according to any one of claims 2 to 9,
The wiper blade according to claim 1, wherein the washer nozzle is disposed closer to the moving direction at the start of wiping than the blade rubber at the wiper blade stop position.

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