JP2014122014A - Wiper device and wiper blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper device capable of suppressing decline of pressing force on the base end side of a wiper blade caused by influence of a wiper arm.SOLUTION: A wiper blade 12 includes a tip side fin part 32A formed on a first case 16 on the tip side with respect to a connection member 13 connecting the first case to a wiper arm 11, and a base end side fin part 32B provided on a second case 17 on the based end side with respect to the connection member 13. The tip side fin part 32A has an apex 43 set on the rear side with respect to the width-direction center of the first case 16, and has an inclined plane 41 having an up-grade toward the rear side on the front side of the apex 43. An apex 46 of the base end side fin part 32B is set on the width-direction front side with respect to the apex 43 of the tip side fin part 32A.

Description

  The present invention relates to a wiper device for wiping a windshield or the like of a vehicle.

  Conventionally, in a wiper device for a vehicle, without using a lever assembly in which a plurality of levers are connected in a tournament shape, the height is kept low by attaching a blade rubber to a case containing a leaf spring-like backing. Some have a so-called leverless type wiper blade (see, for example, Patent Document 1). In this type of wiper device, the tip of the wiper arm is connected to the central portion in the longitudinal direction of the wiper blade, and the wiper blade is given a pressing force from the wiper arm toward the wiping surface, and the pressing force from the wiper arm At the end in the longitudinal direction where it is difficult to act, the wiping surface is pressed by the elasticity of the backing.

  Further, in this type of wiper blade, a fin portion for supplementing the pressing force to the wiping surface by using traveling wind during high-speed traveling is provided on the upper portion (on the side of the wiping surface) of the wiper blade. The fin portion has a wind receiving surface that is upwardly inclined toward the rear side in the width direction of the wiper blade (rear side of the vehicle). By receiving the traveling wind at the wind receiving surface, the fin portion is pushed toward the wiping surface side. Pressure is generated. Further, the top portion of the fin portion (the uppermost portion of the wind receiving surface) is set closer to the rear end in the width direction of the wiper blade in order to increase the area of the wind receiving surface.

JP 2004-106712 A

  By the way, in the wiper device, generally, the wiper arm is located on the vehicle front side of the wiper blade on the base end side (side closer to the rotational drive shaft of the wiper arm base end) than the longitudinal central portion (the connection portion with the wiper arm) of the wiper blade. The wiper arm itself is not arranged on the tip side of the connecting portion of the wiper blade. For this reason, since there is no wiper arm on the tip side of the connecting portion of the wiper blade, the traveling wind flows in parallel substantially along the wiping surface and preferably reaches the fin portion, but on the proximal end side of the wiper blade, the traveling wind After diving under the wiper arm located on the front side of the wiper blade, the direction changes upward (on the side of the wiping surface). For this reason, in the configuration in which the top of the fin portion is set near the rear end in the width direction of the wiper blade as described above, the traveling wind easily flows so as to avoid over the top of the fin portion, It is difficult to effectively catch the wind at the fins. As a result, there is a possibility that the pressing force toward the wiping surface side is insufficient on the base end side of the wiper blade. This problem is particularly noticeable in a leverless type wiper blade in which the height from the wiping surface of the wiper blade is kept low.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a wiper device and a wiper blade that can suppress a decrease in pressing force on the base end side of the wiper blade due to the influence of the wiper arm. It is to provide.

  A wiper device that solves the above problem includes a wiper blade having a long blade rubber for wiping the wiping surface and a leaf spring-like backing for applying a pressing force to the blade rubber to the wiping surface, A wiper arm is connected to a connecting portion provided at a middle portion in the longitudinal direction of the wiper blade, and a distal end fin portion and a proximal end fin portion are provided on the distal end side and the proximal end side of the wiper blade, respectively. A wiper device configured to generate a pressing force toward the wiping surface by receiving a traveling wind at the distal end fin portion and the proximal end fin portion, wherein the distal end fin portion includes: The top portion is set to the rear side from the widthwise center of the wiper blade, and the front end of the top portion has an inclined surface that is upwardly inclined toward the rear side, and the base end Top of the fin portion is set in the width direction of the front side of the top portion of the distal-side fin portion.

  According to this configuration, the tip fin portion is set at the rear side of the wiper blade in the width direction of the wiper blade, so that a sufficient space for forming the inclined surface on the front side of the top portion is ensured and the wind is inclined. The surface area can be increased. For this reason, it becomes possible to generate sufficiently the pressing force to the wiping surface side in the front end side rather than the connection part of the wiper blade in which the wiper arm is not arranged. On the other hand, since the wiper arm connected to the connecting portion is disposed in front of the base end side fin portion, traveling wind reaching the base end side fin portion is affected by the wiper arm. That is, the direction of the flow of the traveling wind is changed upward (on the side of the wiping surface) before reaching the proximal fin portion due to the wiper arm. However, since the top portion of the base end fin portion is set on the front side in the width direction with respect to the top portion of the tip end fin portion, the traveling direction is changed upward (on the side of the wiping surface) due to the influence of the wiper arm. It becomes easier to receive the wind at the proximal fin portion. In this configuration, although the space on the front side of the top portion is narrower than the configuration in which the top portion is set at a position closer to the rear end in the width direction of the wiper blade (the same position as the front end fin portion), the air volume received is increased. Therefore, it is possible to improve the pressing force on the wiping surface side that is generated when the traveling wind is received. Therefore, it is possible to suppress a decrease in the pressing force on the base end side of the wiper blade due to the influence of the wiper arm.

  A wiper device that solves the above problem includes a wiper blade having a long blade rubber for wiping the wiping surface and a leaf spring-like backing for applying a pressing force to the blade rubber to the wiping surface, A wiper arm is connected to a connecting portion provided at a middle portion in the longitudinal direction of the wiper blade, and a distal end fin portion and a proximal end fin portion are provided on the distal end side and the proximal end side of the wiper blade, respectively. A wiper device configured to generate a pressing force toward the wiping surface by receiving a traveling wind at the front end fin portion and the base end fin portion, wherein the front end fin portion and the base fin portion Each of the end fin portions has a top portion set rearward of the center in the width direction of the wiper blade, and the front side of the top portion has an upward slope toward the rear side. That an inclined surface, the proximal-side fin portion has a height dimension is larger than the distal side fin portion.

  According to this configuration, since the top portions of the tip side fin portion and the base end side fin portion are set to the rear side of the center in the width direction of the wiper blade, a sufficient space for forming the inclined surface on the front side of the top portion is sufficiently secured. Thus, it is possible to increase the area of the inclined surface that receives the wind. On the other hand, since the wiper arm connected to the connecting portion is disposed in front of the base end side fin portion, traveling wind reaching the base end side fin portion is affected by the wiper arm. That is, the direction of the flow of the traveling wind is changed upward (on the side of the wiping surface) before reaching the proximal fin portion due to the wiper arm. However, since the height of the proximal fin portion is set to be larger than that of the distal fin portion, the traveling wind whose direction of flow has changed upward (on the side of the wiping surface) due to the wiper arm is proximal. It becomes easier to receive at the side fins. As a result, it is possible to effectively receive the traveling wind also at the base end side fin portion, and it is possible to suppress a decrease in the pressing force on the base end side of the wiper blade due to the influence of the wiper arm.

  In the wiper device, the wiper blade includes a case that accommodates the backing and holds the blade rubber, and a cap that is attached to a longitudinal end portion of the backing, on the proximal end side of the wiper blade. It is preferable that the cap is provided with a protruding fin portion that protrudes in the longitudinal direction from the blade rubber and that generates a pressing force toward the wiping surface by receiving traveling wind.

  According to this configuration, the cap on the base end side of the wiper blade is provided with a protruding fin portion that protrudes in the longitudinal direction from the blade rubber and generates a pressing force toward the wiping surface side by receiving the traveling wind. Even if the pressing force toward the wiping surface by the proximal fin portion is insufficient, the pressing force toward the wiping surface is supplemented by the protruding fin portion. Moreover, since the protruding fins protrude in the longitudinal direction from the blade rubber, the position where the flow of the traveling wind is not hindered by the blade rubber, i.e., the position where the flow of the traveling wind is smooth is excellent. It is possible to generate a pressing force effectively by receiving the traveling wind. Therefore, it is possible to suppress a decrease in the pressing force on the base end side of the wiper blade due to the influence of the wiper arm.

  A wiper device that solves the above problems includes a long blade rubber that wipes a wiping surface, a leaf spring-like backing that applies a pressing force to the blade rubber against the wiping surface, and a housing that houses the backing. A wiper blade comprising: a case for holding a blade rubber; a cap attached to a longitudinal end portion of the backing; and a connecting portion provided at a longitudinal intermediate portion to which a distal end portion of a wiper arm is connected. In the front end side and the base end side of the connecting portion in the above, a front end side fin portion and a base end side fin portion are provided, respectively, and by receiving traveling wind at the front end side fin portion and the base end side fin portion, A wiper device configured to generate a pressing force toward the wiping surface, wherein the cap on the base end side of the wiper blade has the Projecting longitudinally than Doraba, projecting fin portion to generate a pressing force to the wiping surface is provided by receiving the traveling wind.

  According to this configuration, the cap on the base end side of the wiper blade is provided with a protruding fin portion that protrudes in the longitudinal direction from the blade rubber and generates a pressing force toward the wiping surface side by receiving the traveling wind. Even if the pressing force toward the wiping surface by the proximal fin portion is insufficient, the pressing force toward the wiping surface is supplemented by the protruding fin portion. Moreover, since the protruding fins protrude in the longitudinal direction from the blade rubber, the position where the flow of the traveling wind is not hindered by the blade rubber, i.e., the position where the flow of the traveling wind is smooth is excellent. It is possible to generate a pressing force effectively by receiving the traveling wind. Therefore, it is possible to suppress a decrease in the pressing force on the base end side of the wiper blade due to the influence of the wiper arm.

In the wiper device, it is preferable that the protruding fin portion is provided such that the end portion on the wiping surface side extends to the wiping surface side than the wiping surface side end portion of the main body portion of the cap.
According to this configuration, the protruding fin portion is provided with the wiping surface side end portion extending toward the wiping surface side of the wiping surface side end portion of the main body portion of the cap, thereby suppressing the height of the protruding fin portion, The pressing force to the wiping surface side can be increased. It should be noted that suppressing the height of the protruding fin portion contributes to preventing the protruding fin portion from colliding with the wiper arm.

  In the wiper device, it is preferable that the distal end fin portion and the proximal end fin portion each include a lip portion that extends in a direction perpendicular to the wiping surface and forms a top portion.

  According to this configuration, since the lip portion effectively receives the traveling wind, positive pressure tends to be generated in the space in front of the lip portion. Thereby, it becomes possible to improve the pressing force on the wiping surface side that is generated when the distal fin portion and the proximal fin portion receive the traveling wind.

  In the wiper device, it is preferable that a distance from the wiping surface to the top of the proximal end fin portion is set shorter than a distance from the wiping surface to a side wall portion on the rear side in the width direction of the wiper arm.

  According to this configuration, when the wiping surface is wiped, when the base end side portion of the wiper blade vibrates (shakes) toward the wiper arm due to friction with the wiping surface, the base end fin portion is rearward in the width direction of the wiper arm. It can suppress colliding with the side wall part on the side.

  In the wiper device, there is a gap between the front end portion in the width direction of the wiper blade on the base end side with respect to the wiping surface and the side wall portion on the rear side in the width direction of the wiper arm when viewed from the direction orthogonal to the wiping surface. It is preferable to be provided.

  According to this configuration, it is possible to smooth the flow of the traveling wind that passes between the wiper arm and the wiping surface toward the wiper blade side, thereby suppressing the occurrence of positive pressure below the wiper arm (wiping surface side). can do. As a result, it is possible to suppress the positive pressure generated below the wiper arm from acting as lift and lifting the wiper arm from the wiping surface.

  A wiper blade that solves the above problems includes a long blade rubber for wiping the wiping surface, and a leaf spring-like backing for applying a pressing force to the wiping surface to the blade rubber. A wiper arm is connected to the provided connecting portion, and a distal end fin portion and a proximal end fin portion are provided on the distal end side and the proximal end side in the longitudinal direction from the coupling portion, respectively. A wiper blade configured to generate a pressing force toward the wiping surface by receiving a traveling wind at the end fin portion, wherein the top fin portion has a top portion from the center in the width direction of the wiper blade. Is also set on the rear side, and on the front side of the top portion, there is an inclined surface that is upwardly inclined toward the rear side, and the top portion of the base end side fin portion is more than the top portion of the tip end side fin portion. Width It is set to direction front side.

  According to this configuration, the tip fin portion is set at the rear side of the wiper blade in the width direction of the wiper blade, so that a sufficient space for forming the inclined surface on the front side of the top portion is ensured and the wind is inclined. The surface area can be increased. For this reason, it becomes possible to generate sufficiently the pressing force to the wiping surface side in the tip side rather than the connection part of a wiper blade. On the other hand, since the wiper arm connected to the connecting portion is disposed in front of the base end side fin portion, traveling wind reaching the base end side fin portion is affected by the wiper arm. That is, the direction of the flow of the traveling wind is changed upward (on the side of the wiping surface) before reaching the proximal fin portion due to the wiper arm. However, since the top portion of the base end fin portion is set on the front side in the width direction with respect to the top portion of the tip end fin portion, the traveling direction is changed upward (on the side of the wiping surface) due to the influence of the wiper arm. It becomes easier to receive the wind at the proximal fin portion. In this configuration, although the space on the front side of the top portion is narrower than the configuration in which the top portion is set at a position closer to the rear end in the width direction of the wiper blade (the same position as the front end fin portion), the air volume received is increased. Therefore, it is possible to improve the pressing force on the wiping surface side that is generated when the traveling wind is received. Therefore, it is possible to suppress a decrease in the pressing force on the base end side of the wiper blade due to the influence of the wiper arm.

  A wiper blade that solves the above problems includes a long blade rubber for wiping the wiping surface, and a leaf spring-like backing for applying a pressing force to the wiping surface to the blade rubber. A wiper arm is connected to the provided connecting portion, and a distal end fin portion and a proximal end fin portion are provided on the distal end side and the proximal end side in the longitudinal direction from the coupling portion, respectively. A wiper blade configured to generate a pressing force toward the wiping surface by receiving traveling wind at the end fin portion, wherein the top fin portion and the base end fin portion each have a top portion as described above. The wiper blade is set on the rear side of the widthwise center of the wiper blade, and has an inclined surface that is upwardly inclined toward the rear side on the front side of the top, and the proximal fin portion is on the tip side F Height is set larger than the emission portion.

  According to this configuration, since the top portions of the tip side fin portion and the base end side fin portion are set to the rear side of the center in the width direction of the wiper blade, a sufficient space for forming the inclined surface on the front side of the top portion is sufficiently secured. Thus, it is possible to increase the area of the inclined surface that receives the wind. On the other hand, since the wiper arm connected to the connecting portion is disposed in front of the base end side fin portion, traveling wind reaching the base end side fin portion is affected by the wiper arm. That is, the direction of the flow of the traveling wind is changed upward (on the side of the wiping surface) before reaching the proximal fin portion due to the wiper arm. However, since the height of the proximal fin portion is set to be larger than that of the distal fin portion, the traveling wind whose direction of flow has changed upward (on the side of the wiping surface) due to the wiper arm is proximal. It becomes easier to receive at the side fins. As a result, it is possible to effectively receive the traveling wind also at the base end side fin portion, and it is possible to suppress a decrease in the pressing force on the base end side of the wiper blade due to the influence of the wiper arm.

  A wiper blade that solves the above problems includes a long blade rubber for wiping the wiping surface, a leaf spring-like backing for applying a pressing force to the blade rubber against the wiping surface, and containing the backing. A case that holds a blade rubber; a cap that is attached to a longitudinal end portion of the backing; and a connecting portion that is provided at an intermediate portion in the longitudinal direction and to which a tip end portion of a wiper arm is connected. On the distal end side and the proximal end side, a distal end fin portion and a proximal end fin portion are provided, respectively, and when the traveling wind is received by the distal end fin portion and the proximal end fin portion, A wiper blade configured to generate a pressing force, wherein the cap on the base end side in the longitudinal direction protrudes in the longitudinal direction from the blade rubber and travels Projecting fin portion to generate a pressing force to the wiping surface is provided by receiving.

  According to this configuration, the cap on the base end side in the longitudinal direction is provided with a protruding fin portion that protrudes in the longitudinal direction from the blade rubber and generates a pressing force toward the wiping surface side by receiving the traveling wind. Even if the pressing force toward the wiping surface by the proximal fin portion is insufficient, the pressing force toward the wiping surface is supplemented by the protruding fin portion. Moreover, since the protruding fins protrude in the longitudinal direction from the blade rubber, the position where the flow of the traveling wind is not hindered by the blade rubber, i.e., the position where the flow of the traveling wind is smooth is excellent. It is possible to generate a pressing force effectively by receiving the traveling wind. Therefore, it is possible to suppress a decrease in the pressing force on the base end side of the wiper blade due to the influence of the wiper arm.

  According to the wiper device and the wiper blade of the present invention, it is possible to suppress a decrease in the pressing force on the base end side of the wiper blade due to the influence of the wiper arm.

It is a top view of the wiper device of a 1st embodiment. FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. It is a schematic diagram for demonstrating the effect | action of the wiper apparatus of the same form. It is sectional drawing of the wiper blade of 2nd Embodiment. It is a schematic diagram for demonstrating the effect | action of the wiper apparatus of the same form. It is a perspective view of the base end side of the wiper blade of 3rd Embodiment. It is a front view of the base end side of the wiper blade of 3rd Embodiment. It is a side view of the base end side of the wiper blade of 3rd Embodiment. (A) is a wave form diagram for demonstrating the lift with respect to the wiper blade which does not have a protrusion fin part. (B) is a schematic diagram of a wiper blade without protruding fins.

(First embodiment)
Hereinafter, a first embodiment of the wiper device and the wiper blade will be described.
As shown in FIG. 1, a wiper device 10 according to the present embodiment is for wiping raindrops and the like adhering to the surface (wiping surface G) of a windshield of a vehicle, and includes a wiper arm 11 and a tip portion of the wiper arm 11. The wiper blade 12 is connected to the wiping surface G and is connected to the wiping surface G.

  The wiper arm 11 extends substantially parallel to the wiper blade 12 at a position on the vehicle front side of the wiper blade 12 from the base end portion fixed to a pivot shaft (not shown) toward the distal end side. The distal end portion 11a of the wiper arm 11 is bent toward the wiper blade 12 and positioned above the wiper blade 12, and the longitudinally central portion (longitudinal direction) of the wiper blade 12 via the connecting member 13 constituting the connecting portion. (Intermediate direction portion).

  Further, as shown in FIG. 4, the wiper arm 11 is opened to the wiping surface G side from the upper wall portion 11b and a pair of side wall portions 11c and 11d extending from the both ends in the width direction of the upper wall portion 11b to the wiping surface G side. It has an inverted U-shaped cross section. A spring (not shown) is mounted inside the wiper arm 11, and the wiper arm 11 is configured to press the wiper blade 12 against the wiping surface G based on the spring force of the spring. Then, the wiper blade 12 reciprocally swings when the wiper arm 11 rotates by a predetermined angle by a wiper motor (not shown), and the wiper blade 12 wipes the wiping surface G.

  As shown in FIGS. 1 and 2, the wiper blade 12 includes the connecting member 13 that is connected to the tip end portion 11 a of the wiper arm 11, a long blade rubber 14, and one piece along the longitudinal direction of the blade rubber 14. And a first case 16 and a second case 17 disposed on the distal end side and the proximal end side of the connecting member 13 in the longitudinal direction. Caps 18 for preventing the first and second cases 16 and 17 and the blade rubber 14 from slipping out are attached to both ends in the longitudinal direction of the wiper blade 12 and both ends in the longitudinal direction of the backing 15. ing.

  As shown in FIG. 2, the blade rubber 14 is formed in a long shape from a rubber material or elastomer having elasticity. The blade rubber 14 is formed symmetrically with respect to the center line L1 in the width direction (left and right direction in FIG. 2), and is formed so that the cross-sectional shape thereof is constant along the longitudinal direction. A head portion 21 held by the first and second cases 16 and 17 is formed on the upper portion of the blade rubber 14 over the entire longitudinal direction of the blade rubber 14.

  The head portion 21 has a flat shape with a small thickness in the height direction (perpendicular to the wiping surface G), and a connecting portion 22 extending downward from the center in the width direction of the head portion 21 is formed at the lower portion of the head portion 21. An extending portion 23 that is thinner than the head portion 21 in the height direction is formed. The extending portion 23 extends from the lower end of the connecting portion 22 to both sides in the width direction of the blade rubber 14. A constricted portion 24 (holding groove) that is recessed inward from both side surfaces in the width direction is formed by the connecting portion 22 that is formed narrow in the width direction with respect to the head portion 21 and the extending portion 23.

  A wiping portion 26 is formed at the lower portion of the blade rubber 14 via a neck portion 25 extending from the lower surface of the extending portion 23. The neck portion 25 is formed at the center of the blade rubber 14 in the width direction and is located below the connecting portion 22, and has a narrower width than the connecting portion 22. The wiping part 26 has a substantially inverted tapered shape in which the upper part (the end part on the neck part 25 side) is formed wider than the neck part 25 and becomes narrower from the upper part toward the lower part. Is formed to have a width substantially equal to the neck portion 25. The wiping portion 26 can be tilted in the width direction with respect to the head portion 21 by bending of the neck portion 25. In addition, the width direction dimension of the whole extension part 23 is formed wider than the width direction dimension of the head part 21 so that the shoulder part of the wiping part 26 abuts when the wiping part 26 tilts. The tilting posture of the portion 26 is restricted.

  On the upper side (reverse wiping surface side) of the head portion 21 of the blade rubber 14, a backing 15 made of a metal leaf spring material is disposed. The backing 15 has a long shape along the longitudinal direction of the blade rubber 14, and the length in the longitudinal direction is set to be equal to the length of the blade rubber 14. Further, the backing 15 is disposed so that the plate surface thereof is orthogonal to the height direction of the blade rubber 14, and also contacts the upper surface of the head portion 21 (the end surface on the counter wiping portion side) and the height direction of the blade rubber 14. It touches. The width of the backing 15 is set wider than the width of the head portion 21, and both end portions of the backing 15 in the width direction protrude outward in the width direction from the head portion 21.

  The connecting member 13 shown in FIG. 1 is rotatably and detachably connected to the distal end portion 11a of the wiper arm 11 via a connecting clip (not shown), and the head portion 21 of the blade rubber 14 and the central portion in the longitudinal direction of the backing 15. Holding. Specifically, at the lower portion of the connecting member 13, a holding portion (see FIG. 5) that surrounds the periphery of the central portion in the longitudinal direction of the head portion 21 and the backing 15 and restricts movement in the longitudinal orthogonal direction (height direction and width direction) (Not shown) is provided. Further, the connecting member 13 includes a stopper (not shown) that restricts the backing 15 from being movable in the longitudinal direction at the center in the longitudinal direction of the backing 15.

  The first case 16 is disposed on the distal end side of the connecting member 13 (the side far from the base end portion (the pivot shaft) of the wiper arm 11), and one second case 17 is disposed on the proximal end side of the connecting member 13. ing. The lengths of the cases 16 and 17 are slightly shorter than the half length of the backing 15. Each case 16, 17 includes a holding rail 31 that surrounds and holds the periphery of the head portion 21 and the backing 15 of the blade rubber 14. A tip side fin portion 32 </ b> A is formed on the upper portion of the holding rail 31 of the first case 16, and a base end side fin portion 32 </ b> B is formed on the upper portion of the holding rail 31 of the second case 17.

  As shown in FIGS. 2 and 3, the holding rails 31 of the cases 16 and 17 are made of a soft (flexible) resin material and have a substantially cylindrical shape extending along the longitudinal direction of the blade rubber 14. ing. The holding rail 31 has the same shape in each case 16 and 17.

  The holding rails 31 of the cases 16 and 17 are respectively extended from an upper covering portion 33 that covers the upper surface of the backing 15 (the surface on the side opposite to the blade rubber), and front and rear edges of the upper covering portion 33. Holding parts 34 and 35 surrounding the backing 15 and both sides in the width direction and the lower side of the head part 21 are formed over the entire longitudinal direction of the cases 16 and 17. That is, inside the holding rail 31, a backing housing portion 36 and a head housing portion 37 constituted by the upper covering portion 33 and the holding portions 34 and 35 are formed. Of the two holding portions 34, 35, the one on the vehicle front side is the holding portion 34, and the one on the vehicle rear side is the holding portion 35.

  The backing housing portion 36 and the head housing portion 37 are portions that respectively accommodate the backing 15 and the head portion 21 of the blade rubber 14, and are formed over the entire longitudinal direction of the holding rail 31, and both longitudinal ends of the holding rail 31. It is open at. The backing housing portion 36 has a width substantially equal to the width of the backing 15 and a thickness (depth) substantially equal to the thickness of the backing 15, and the head housing portion is located below the wiping housing portion 36 (on the wiping surface G side). 37 is formed so as to communicate with the backing housing portion 36. The head accommodating portion 37 is narrower than the backing accommodating portion 36 and has a width substantially equal to the width of the head portion 21 and a thickness (depth) substantially equal to the thickness of the head portion 21.

  The tips of the holding portions 34 and 35 of the holding rail 31 are inserted into the constricted portion 24 below the head portion 21 of the blade rubber 14. In other words, the connecting portion 22 of the blade rubber 14 is inserted into the groove between the tips of the holding portions 34 and 35. Thus, the head portion 21 is locked in the height direction of the blade rubber 14 with respect to the tips of the holding portions 34 and 35. The width between the tips (grooves) of the holding portions 34 and 35 is formed substantially equal to the width of the connecting portion 22, and the thickness of the tips of the holding portions 34 and 35 is the thickness of the connecting portion 22. It is formed approximately equal to (length in the vertical direction). In addition, an inclined surface 38 that approaches the wiping surface G is formed on the lower surface (surface on the wiping surface G side) of each holding portion 34, 35 as it goes toward the tip (that is, toward the constricted portion 24).

  The width direction center line L2 of the backing 15 is offset to the vehicle rear side with respect to the width direction center line L1 of the blade rubber 14 over the entire longitudinal direction (see FIG. 2). That is, the protrusion amount of the backing 15 toward the vehicle front side with respect to the head portion 21 is set smaller than the protrusion amount toward the vehicle rear side. Thereby, without extending the width dimension of the backing 15, it is comprised so that the protrusion amount to the vehicle front side of the holding | maintenance part 34 of the front-end side holding the backing 15 may become small.

  As described above, the holding rails 31 of the cases 16 and 17 surround and hold the backing 15 and the head portion 21 in a state where the backing 15 is in contact with the upper surface of the head portion 21. And the extension part 23 of the blade rubber 14, the neck part 25, and the wiping part 26 are exposed under the holding rail 31 (wiping surface G side).

  Further, the backing 15 and the head portion 21 are held by the holding portion of the connecting member 13 at the center in the longitudinal direction. The holding portion of the connecting member 13 has substantially the same structure as the holding rail 31 of the first and second cases 16 and 17, and the holding rail of the second case 17 extends from the holding rail 31 of the first case 16. 31 is communicated with the connecting member 13 through a holding portion.

  The action line P of the pressing force that the tip end portion 11a of the wiper arm 11 presses the wiper blade 12 toward the wiping surface G is configured to overlap the width direction center line L1 of the blade rubber 14. The pressing force acts on the wiping portion 26 of the blade rubber 14 in a balanced manner in the width direction. Thereby, the tilting operation of the blade rubber 14 when the wiper blade 12 performs the reversing operation, that is, the reversal of the tilting posture is smoothly performed in the forward operation and the backward operation.

  As shown in FIG. 2, in the first case 16, a tip side fin portion 32 </ b> A along the longitudinal direction of the first case 16 is provided on the upper side of the holding rail 31 opposite to the wiping surface G. The tip side fin portion 32A is made of an elastomer material and is formed integrally with the holding rail 31 by two-color molding. Further, the tip side fin portion 32 </ b> A is formed over substantially the entire length of the first case 16.

  The front-end fin portion 32A has an inclined surface 41 that is upwardly inclined toward the vehicle rear side (the distance from the wiping surface G becomes longer) in a state where the wiper blade 12 is disposed at the stop position (storage position). doing. The inclined surface 41 is formed across the upper surface of the holding rail 31 on the vehicle front side. The inclined surface 41 extends from a position ahead of the front end of the backing 15 to a position above the rear end of the backing 15.

  A lip portion 42 that protrudes upward along the height direction of the wiper blade 12 (perpendicular to the wiping surface G) is formed at the uppermost portion (the vehicle rear side end portion) of the inclined surface 41. The lip portion 42 is formed along the longitudinal direction of the first case 16 and is formed so as to overlap the rear side end portion of the backing 15 and the height direction of the wiper blade 12. The tip of the lip part 42 constitutes the top part 43 (uppermost part) of the tip side fin part 32A. That is, the top portion 43 of the tip side fin portion 32A is set behind the center in the width direction of the first case 16 (the center in the width direction of the wiper blade 12) over the entire longitudinal direction. As a result, a sufficient space for forming the inclined surface 41 on the front side of the top 43 is ensured, so that the area of the inclined surface 41 can be increased. It should be noted that the center line L3 in the width direction of the tip side fin portion 32A composed of the inclined surface 41 and the lip portion 42 is offset to the vehicle rear side with respect to the center line L1 in the width direction of the blade rubber 14.

  On the other hand, as shown in FIG. 3, a proximal fin portion 32 </ b> B along the longitudinal direction of the second case 17 is provided on the upper side of the holding rail 31 of the second case 17 opposite to the wiping surface G. Yes. Similarly to the tip side fin portion 32A, the base side fin portion 32B is also made of an elastomer material and is formed integrally with the holding rail 31 by two-color molding.

  The proximal fin portion 32B has an inclined surface 44 that is upwardly inclined toward the vehicle rear side (the distance from the wiping surface G becomes longer) in a state where the wiper blade 12 is disposed at the stop position (storage position). Have. The inclined surface 44 is formed over the upper surface of the holding rail 31 on the vehicle front side. The inclined surface 44 extends from a position in front of the front end portion of the backing 15 to a position above the intermediate portion in the width direction of the backing 15. That is, the inclined surface 41 of the distal fin portion 32A is configured to have a longer length in the width direction than the inclined surface 44 of the proximal fin portion 32B.

  A lip portion 45 that protrudes upward along the height direction of the wiper blade 12 is formed at the uppermost portion (the vehicle rear side end portion) of the inclined surface 44. The lip portion 45 is formed along the longitudinal direction of the second case 17 at a position overlapping the center line L2 in the width direction of the backing 15. The tip of the lip portion 45 constitutes the top portion 46 (uppermost portion) of the base end side fin portion 32B. That is, the top portion 46 of the base end side fin portion 32B is set on the front side in the width direction (vehicle front side) with respect to the top portion 43 of the tip side fin portion 32A over the entire longitudinal direction. Note that the height H2 of the proximal end fin portion 32B is set equal to the height H1 of the lip portion 42 of the distal fin portion 32A.

  As shown in FIGS. 1 and 4, the wiper arm 11 is located on the vehicle front side of the second case 17 on the base end side. The wiper arm 11 is spaced from the second case 17 so that a gap S is provided between the side wall portion 11d on the rear side in the width direction (vehicle rear side) and the front end portion in the width direction of the second case 17 of the wiper blade 12. Located on the front side of the vehicle. Further, as shown in FIG. 4, the distance D1 from the wiping surface G to the top 46 of the proximal fin portion 32B is set shorter than the distance D2 from the wiping surface G to the lower end of the side wall 11d of the wiper arm 11. Yes.

Next, the operation of this embodiment will be described.
In the wiper device 10 configured as described above, the pressing force on the wiping surface G side from the distal end portion 11 a of the wiper arm 11 is dispersed in the longitudinal direction via the connecting member 13 and the backing 15 and transmitted to the blade rubber 14. . Further, the backing 15 presses the blade rubber 14 against the wiping surface G by its own springiness. Thereby, the wiping part 26 of the blade rubber 14 is pressed against the wiping surface G over the entire longitudinal direction. In this state, the wiper arm 11 is reciprocally rotated, so that the wiping surface G is wiped by the blade rubber 14. At the time of wiping, the wiping portion 26 of the blade rubber 14 is in contact with the wiping surface G while being tilted in the width direction (tilted posture) with respect to the wiping surface G. However, in FIGS. The state where the portion 26 stands upright with respect to the wiping surface G is shown.

  As shown in FIG. 4, when the vehicle travels forward, the wiper arm 11 and the wiper blade 12 receive traveling wind W from the vehicle front side. Since the wiper arm 11 is located on the vehicle front side of the wiper blade 12 on the base end side of the connecting member 13 of the wiper blade 12, the traveling wind W dives under the wiper arm 11 and then moves upward (reverse wiping). The direction changes to the (face side). Here, in this embodiment, since the top part 46 of the base end side fin part 32B is set to the vehicle front side rather than the top part 43 of the front end side fin part 32A, the traveling wind W is generated by the base end side fin part 32B (lip It is possible to catch the traveling wind W by the proximal fin portion 32B before blowing up to a position exceeding the portion 45).

  On the other hand, since the wiper arm 11 is not positioned on the front side of the vehicle on the tip side of the connecting member 13 of the wiper blade 12, the traveling wind W flows along the wiping surface G and suitably reaches the tip side fin portion 32A.

  When the inclined surfaces 41 and 44 of the distal end side fin portion 32A and the proximal end side fin portion 32B receive the traveling wind W, a pressing force toward the wiping surface G is generated in the first and second cases 16 and 17, and the blade rubber 14 is pressed against the wiping surface G. Further, when the lip portions 42 and 45 of the distal end fin portion 32A and the proximal end fin portion 32B receive the traveling wind W, positive pressure is generated in the space in front of the lip portions 42 and 45. G side pressing force is generated. As described above, since the driving wind W is received by the tip side fin portion 32A and the base end side fin portion 32B, a sufficient pressing force toward the wiping surface G is generated, so that the lifting of the wiper blade 12 from the wiping surface G is suppressed. As a result, good wiping by the wiping portion 26 of the blade rubber 14 is realized.

  In the present embodiment, since the gap S in the wiping surface G direction is set between the side wall portion 11 d of the wiper arm 11 and the second case 17, the traveling wind W passing between the wiper arm 11 and the wiping surface G is set. Flows smoothly through the gap S. As a result, the generation of positive pressure below the wiper arm 11 (wiping surface G side) is suppressed, and as a result, the positive pressure generated below the wiper arm 11 acts as lift and the wiper arm 11 is lifted from the wiping surface G. Is suppressed.

Next, characteristic effects of the present embodiment will be described.
(1) The wiper blade 12 is provided on the distal end side fin portion 32 </ b> A formed in the first case 16 on the distal end side with respect to the connecting member 13 with the wiper arm 11 and on the second case 17 on the proximal end side with respect to the connecting member 13. A proximal end fin portion 32B. The tip side fin portion 32 </ b> A has its top 43 set at the rear side of the center of the wiper blade 12 in the width direction (the center in the width direction of the first case 16). It has the inclined surface 41 which is an upward slope toward it. And the top part 46 of the base end side fin part 32B is set to the width direction front side rather than the top part 43 of 32 A of front end side fin parts. Thereby, in the tip side fin part 32A, since the top part 43 is set to the rear side of the width direction center of the wiper blade 12 (the width direction center of the first case 16), the front side inclined surface 41 of the top part 43 A sufficient formation space is ensured, and the area of the inclined surface 41 that receives the wind can be increased. For this reason, it is possible to generate a sufficient pressing force toward the wiping surface G on the tip side of the connecting member 13 of the wiper blade 12.

  On the other hand, since the wiper arm 11 connected to the connecting member 13 is disposed in front of the base end fin portion 32B, the traveling wind W reaching the base end fin portion 32B is affected by the wiper arm 11. That is, the direction of the flow of the traveling wind W is changed upward (on the side of the wiping surface) before reaching the proximal end fin portion 32B due to the influence of the wiper arm 11. However, in the base end side fin part 32B of this embodiment, since the top part 46 is set to the width direction front side rather than the top part 43 of 32 A of front end side fin parts, it is upward (anti-wiping surface side) by the influence of the wiper arm 11. It becomes easy to receive the traveling wind W whose direction of flow has changed to the base end side fin portion 32B. In this configuration, compared to the configuration in which the top portion 46 is set at a position closer to the rear end in the width direction of the wiper blade 12 (the rear end in the width direction of the second case 17) (the same position as the top portion 43 of the front end fin portion 32A). Although the space on the front side of the top portion 46 is narrowed, the amount of air received increases, so that it is possible to improve the pressing force on the wiping surface G generated when the traveling wind W is received. Accordingly, it is possible to suppress a decrease in the pressing force on the base end side of the wiper blade 12 due to the influence of the wiper arm 11.

  (2) The tip side fin portion 32A and the base end side fin portion 32B include lip portions 42 and 45 that extend in the direction perpendicular to the wiping surface G and constitute the top portions 43 and 46, respectively. According to this configuration, since the lip portions 42 and 45 effectively receive the traveling wind W, positive pressure tends to be generated in the space in front of the lip portions 42 and 45. Accordingly, it is possible to improve the pressing force on the wiping surface G side that is generated when the distal end fin portion 32A and the proximal end fin portion 32B receive the traveling wind W.

  (3) A distance D1 from the wiping surface G to the top 46 of the proximal fin portion 32B is set to be shorter than a distance D2 from the wiping surface G to the side wall portion 11d on the rear side in the width direction of the wiper arm 11. Accordingly, when the wiping surface G is wiped, when the proximal end side portion (second case 17) of the wiper blade 12 vibrates (shakes) toward the wiper arm 11 due to friction with the wiping surface G or the like, the proximal fin It is possible to suppress the portion 32B from colliding with the side wall portion 11d of the wiper arm 11.

  (4) A gap S is provided between the front end portion in the width direction of the second case 17 and the side wall portion 11 d on the rear side in the width direction of the wiper arm 11 when viewed from the direction orthogonal to the wiping surface G. According to this configuration, the flow of the traveling wind W that passes between the wiper arm 11 and the wiping surface G and moves toward the wiper blade 12 can be made smooth. It can suppress that a pressure arises. As a result, it is possible to suppress the positive pressure generated below the wiper arm 11 from acting as lift and lifting the wiper arm 11 from the wiping surface G.

(Second Embodiment)
Hereinafter, a second embodiment of the wiper device and the wiper blade will be described.
In the wiper device and wiper blade of the present embodiment, the configuration of the proximal end fin portion is different from that of the first embodiment. Therefore, in the following, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5, the base end side fin portion 32 </ b> C of the present embodiment has an inclined surface 51 similar to the inclined surface 41 of the distal end side fin portion 32 </ b> A, and the uppermost portion (the vehicle rear side end) of the inclined surface 51. Part) is formed with a lip part 52 projecting upward along the height direction of the wiper blade 12. The lip portion 52 is formed at the same position in the width direction as the lip portion 42 of the tip side fin portion 32A. The height H3 of the lip portion 52 of the proximal end fin portion 32C is set to be higher than the height H1 of the lip portion 42 of the distal end fin portion 32A over the entire longitudinal direction of the lip portion 52. . That is, the top 53 (the tip of the lip portion 52) of the base end fin portion 32C is configured to be higher than the top 43 of the tip fin portion 32A.

  The distance D3 from the wiping surface G to the top 53 of the proximal end fin portion 32C is set shorter than the distance D2 from the wiping surface G to the lower end of the side wall portion 11d of the wiper arm 11. That is, the height H3 of the lip portion 52 is set to be higher than the height H1 of the lip portion 42 of the tip side fin portion 32A and lower than the height of the lower end of the side wall portion 11d. Also in this embodiment, it is desirable that a gap S in the wiping surface G direction is set between the side wall portion 11 d of the wiper arm 11 and the second case 17.

  According to this configuration, as shown in FIG. 6, the traveling wind W whose direction of flow is changed upward (on the wiping surface side) due to the influence of the wiper arm on the base end side of the connecting member 13 of the wiper blade 12 is generated. It becomes easy to receive by the base end side fin part 32C. As a result, the base-side fin portion 32C can also receive the traveling wind W effectively, and the decrease in the pressing force on the base end side of the wiper blade due to the influence of the wiper arm can be suppressed.

  In addition, the base end side fin portion 32C, like the tip end side fin portion 32A, is such that the top portion 53 is set on the rear side of the width direction center of the wiper blade 12 (the width direction center of the second case 17). A sufficient space for forming the inclined surface 51 on the front side of the top 53 is ensured. For this reason, the area of the inclined surface 51 can be increased.

(Third embodiment)
Hereinafter, a wiper device and a wiper blade according to a third embodiment will be described with reference to FIGS.

  The wiper device and the wiper blade of the present embodiment are different from those of the first embodiment in the configuration of the proximal end fin portion and the configuration of the cap. Accordingly, in the following description, the same reference numerals are assigned to components that are substantially the same as those in the first embodiment, and detailed description thereof is omitted, and different components are described in detail by adding new symbols.

  As shown in FIG. 7, the configuration (shape) of the base end side fin portion 32D of the present embodiment is the same configuration (shape) as the tip end side fin portion 32A of the first embodiment, and the second case on the base end side Reference numeral 17 denotes a configuration similar to that of the first case 16 on the distal end side of the first embodiment.

  As shown in FIGS. 7 to 9, the cap 61 on the base end side of the present embodiment is attached to the base end portion in the longitudinal direction of the backing 15, and the head portions of the second case 17 and the blade rubber 14. 21 has a main body portion 61a that accommodates 21 longitudinal direction proximal end portions and prevents them from coming out.

In addition, a cap fin portion 61b having a shape similar to that of the base end side fin portion 32D is formed on the upper surface of the main body portion 61a of the base end side cap 61 of the present embodiment.
The cap 61 on the proximal end side of the present embodiment is provided with a protruding fin portion 61c that protrudes from the main body portion 61a in the longitudinal direction from the blade rubber 14. The protruding fin portion 61c has a curved surface 61d that is upwardly inclined toward the vehicle rear side (the distance from the wiping surface G becomes longer) in a state where the wiper blade 12 is disposed at the stop position (storage position). In addition, it is configured to generate a pressing force toward the wiping surface G by receiving the traveling wind on the curved surface 61d.

  As shown in FIGS. 8 and 9, the protruding fin portion 61 c of the present embodiment has a wiping surface G side end (lower end portion) wiping surface G that is closer than the wiping surface G side end portion of the main body portion 61 a. It extends to the side. In other words, the protruding fin portion 61c extends from the main body portion 61a to the middle portion of the wiping portion 26 of the blade rubber 14 extending toward the wiping surface G. Further, the protruding fin portion 61c of the present embodiment is formed at a position (wiping surface G side) whose upper end portion is lower than the top portion of the base end side fin portion 32D.

Next, characteristic effects of the present embodiment will be described.
(1) The cap 61 on the base end side of the wiper blade 12 is provided with a protruding fin portion 61c that protrudes in the longitudinal direction from the blade rubber 14 and generates a pressing force toward the wiping surface G by receiving the traveling wind. For this reason, even if the pressing force to the wiping surface G side by the base end side fin portion 32D is insufficient, the pressing force to the wiping surface G side is supplemented by the protruding fin portion 61c. Moreover, since the protruding fin portion 61c protrudes in the longitudinal direction from the blade rubber 14, it is in a position where the flow of the traveling wind is not hindered by the blade rubber 14, that is, the position of the traveling wind is in a smooth position. It is possible to generate the pressing force effectively by receiving the traveling wind well. Accordingly, the wiper blade due to the influence of the wiper arm 11 (for example, the change in the airflow caused by the wiper arm 11 being positioned side by side on the proximal end side of the wiper blade 12 or the influence of the lift generated in the wiper arm 11 itself on the wiper blade 12). Decrease in the pressing force on the base end side of 12 can be suppressed.

  Here, as shown in FIG. 10 (b), in the wiper blade 12 having caps 71 at both ends provided by removing the protruding fin portions 61c from the cap 61 on the proximal end side of the third embodiment, ), It can be seen that the lift is increased in the cap 71 portion on the proximal end side. Therefore, in the present embodiment, by providing the projecting fin portion 61c on the base end side cap 61, the pressing force at the base end portion is increased, and the good pressing force in the entire longitudinal direction of the wiper blade 12 is extended. The wiping action in the entire direction is secured.

  (2) Since the protruding fin portion 61c is provided with the end portion on the wiping surface G side extending toward the wiping surface G side from the wiping surface G side end portion of the main body portion 61a, the height of the protruding fin portion 61c is suppressed. The pressing force toward the wiping surface G can be increased. In addition, restraining the height of the protruding fin portion 61c contributes to preventing the protruding fin portion 61c from colliding with the wiper arm 11.

In addition, you may change each said embodiment as follows.
In the first embodiment, the height H2 of the lip portion 45 of the proximal fin portion 32B may be set higher than the height H1 of the lip portion 42 of the distal fin portion 32A. According to this configuration, it becomes easier to receive the traveling wind W whose direction of flow has changed upward due to the wiper arm 11 at the proximal fin portion 32B. As a result, the base of the wiper blade 12 due to the influence of the wiper arm 11 can be obtained. A decrease in the pressing force on the end side can be further suppressed.

  -In the base end side fin part 32B of the said 1st Embodiment, you may abbreviate | omit the inclined surface 44 of the vehicle front side of the lip | rip part 45. FIG. That is, the upper surface of the holding rail 31 on the vehicle front side of the lip portion 45 may be formed in parallel to the wiping surface G.

  In each of the above embodiments, the gap S is provided between the front end in the width direction of the second case 17 and the side wall 11d of the wiper arm 11 when viewed from the direction orthogonal to the wiping surface G. You may comprise so that the side wall part 11d of the wiper arm 11 may be located above the 2nd case 17. FIG.

  In each of the above embodiments, the distances D1 and D3 from the wiping surface G to the top portions 46 and 53 of the proximal end fin portions 32B and 32C are greater than the distance D2 from the wiping surface G to the lower end of the side wall portion 11d of the wiper arm 11. It may be set longer.

  In each of the above embodiments, the tip side fin portion 32A and the base end side fin portions 32B and 32C are provided with the lip portions 42, 45, and 52, respectively, but are not particularly limited thereto. For example, the lip portions 42, 45, and 52 may be omitted, and the distal end fin portion 32A and the proximal end fin portions 32B and 32C may be configured by only the inclined surfaces 41, 44, and 51, respectively.

  In each of the above embodiments, the backing housing portion 36 and the head housing portion 37 are communicated with each other in the holding rail 31 so that the backing 15 contacts the head portion 21 of the blade rubber 14. Is not to be done. For example, a wall portion that separates the backing housing portion 36 and the head housing portion 37 is provided in the holding rail 31, and the elasticity (deflection) in the direction of the wiping surface G of the backing 15 is transmitted to the head portion 21 through the wall portion. It is good also as a structure.

  In each of the above embodiments, the connecting member 13 is configured to hold the backing 15 and the head portion 21 of the blade rubber 14 between the first and second cases 16 and 17. 13 may hold the first and second cases 16 and 17.

  In each of the above embodiments, the wiper blade 12 is configured to include the pair of cases 16 and 17, but is not particularly limited thereto. For example, the wiper blade 12 has a length substantially equal to the backing 15 (blade rubber 14). The structure provided only with one case may be sufficient.

  The wiper blade 12 according to the first and second embodiments may be provided with a tip fin portion and a base fin portion, for example, a lever assembly in which a plurality of levers are connected in a tournament shape. It is good also as what provided the front end side fin part and the base end side fin part.

-You may change the cap 18 of the base end side of the said 1st and 2nd embodiment into the cap which has the projection fin part similar to the projection fin part 61c of 3rd Embodiment.
-You may change the cap 18 of the front end side of each said embodiment into the cap which has the projection fin part similar to the projection fin part 61c of 3rd Embodiment.

  -In the said 3rd Embodiment, although the protrusion fin part 61c assumed that the wiping surface G side edge part was extended and provided in the wiping surface G side rather than the wiping surface G side edge part of the main-body part 61a, it is limited to this. For example, the wiping surface G side end portion of the protruding fin portion 61c may be formed to the same position as the wiping surface G side end portion of the main body portion 61a.

  DESCRIPTION OF SYMBOLS 10 ... Wiper apparatus, 11 ... Wiper arm, 11c, 11d ... Side wall part, 12 ... Wiper blade, 13 ... Connection member (connection part), 14 ... Blade rubber, 15 ... Backing, 16 ... 1st case (case), 17 ... 2nd case (case), 32A ... tip side fin part, 32B, 32C ... base end side fin part, 41, 44, 51 ... inclined surface, 42, 45, 52 ... lip part, 43 ... top part of tip side fin part 46, 53 ... Top of the base end side fin part, 61 ... Cap, 61a ... Main body part, 61c ... Projecting fin part, G ... Wiping surface, S ... Gap, W ... Running wind, D1, D2, D3 ... Distance, H1... Height of the tip side fin portion, H2, H3... Height of the base side fin portion.

Claims (11)

A wiper blade having a long blade rubber for wiping the wiping surface, and a leaf spring-like backing for applying a pressing force to the wiping surface to the blade rubber,
A wiper arm is connected to a connecting portion provided at a longitudinal intermediate portion of the wiper blade,
A tip side fin portion and a base end side fin portion are respectively provided on the tip end side and the base end side of the connecting portion in the wiper blade,
A wiper device configured to generate a pressing force toward the wiping surface side by receiving traveling wind at the distal end fin portion and the proximal end fin portion,
The tip side fin portion has its top portion set on the rear side of the center in the width direction of the wiper blade, and on the front side of the top portion has an inclined surface that is upwardly inclined toward the rear side,
The wiper device according to claim 1, wherein a top portion of the base end side fin portion is set on a front side in the width direction with respect to a top portion of the tip end side fin portion. A wiper blade having a long blade rubber for wiping the wiping surface, and a leaf spring-like backing for applying a pressing force to the wiping surface to the blade rubber,
A wiper arm is connected to a connecting portion provided at a longitudinal intermediate portion of the wiper blade,
A tip side fin portion and a base end side fin portion are respectively provided on the tip end side and the base end side of the connecting portion in the wiper blade,
A wiper device configured to generate a pressing force toward the wiping surface side by receiving traveling wind at the distal end fin portion and the proximal end fin portion,
Each of the tip side fin portion and the base end side fin portion is set at the rear side of the widthwise center of the wiper blade, and the front side of the top portion has an upward slope toward the rear side. Having an inclined surface,
The wiper device according to claim 1, wherein a height dimension of the proximal end fin portion is set larger than that of the distal end fin portion. The wiper device according to claim 1 or 2,
The wiper blade has a case for housing the backing and holding the blade rubber, and a cap attached to a longitudinal end portion of the backing.
The cap on the base end side of the wiper blade is provided with a protruding fin portion that protrudes in the longitudinal direction from the blade rubber and generates a pressing force toward the wiping surface side by receiving traveling wind. Wiper device. A long blade rubber for wiping the wiping surface; a leaf spring-like backing for applying a pressing force to the blade rubber against the wiping surface; a case for housing the backing and holding the blade rubber; A wiper blade having a cap attached to a longitudinal end portion of the backing and a connecting portion provided at a longitudinal intermediate portion to which a distal end portion of the wiper arm is connected;
A tip side fin portion and a base end side fin portion are respectively provided on the tip end side and the base end side of the connecting portion in the wiper blade,
A wiper device configured to generate a pressing force toward the wiping surface side by receiving traveling wind at the distal end fin portion and the proximal end fin portion,
The cap on the base end side of the wiper blade is provided with a protruding fin portion that protrudes in the longitudinal direction from the blade rubber and generates a pressing force toward the wiping surface side by receiving traveling wind. Wiper device. The wiper device according to claim 3 or 4,
The wiping surface side end portion of the protruding fin portion is provided so as to extend to the wiping surface side of the wiping surface side end portion of the main body portion of the cap. In the wiper device according to any one of claims 1 to 5,
The wiper device according to claim 1, wherein each of the front end side fin portion and the proximal end side fin portion includes a lip portion extending in a direction perpendicular to the wiping surface and constituting a top portion. The wiper device according to any one of claims 1 to 6,
The wiper device characterized in that a distance from the wiping surface to the top of the proximal end fin portion is set shorter than a distance from the wiping surface to a side wall portion on the rear side in the width direction of the wiper arm. The wiper device according to any one of claims 1 to 7,
A gap is provided between the front end portion in the width direction of the wiper blade on the base end side with respect to the wiping surface and the side wall portion on the rear side in the width direction of the wiper arm when viewed from the direction orthogonal to the wiping surface. Wiper device characterized by. A long blade rubber for wiping the wiping surface, and a leaf spring-like backing for applying a pressing force to the wiping surface to the blade rubber,
A wiper arm is connected to a connecting portion provided in the middle in the longitudinal direction,
The front end side fin portion and the base end side fin portion are provided on the front end side and the base end side in the longitudinal direction from the connecting portion, respectively.
A wiper blade configured to generate a pressing force toward the wiping surface side by receiving traveling wind at the distal end fin portion and the proximal end fin portion,
The tip side fin portion has its top portion set on the rear side of the center in the width direction of the wiper blade, and on the front side of the top portion has an inclined surface that is upwardly inclined toward the rear side,
The wiper blade characterized by the top part of the said base end side fin part being set in the width direction front side rather than the top part of the said front end side fin part. A long blade rubber for wiping the wiping surface, and a leaf spring-like backing for applying a pressing force to the wiping surface to the blade rubber,
A wiper arm is connected to a connecting portion provided in the middle in the longitudinal direction,
The front end side fin portion and the base end side fin portion are provided on the front end side and the base end side in the longitudinal direction from the connecting portion, respectively.
A wiper blade configured to generate a pressing force toward the wiping surface side by receiving traveling wind at the distal end fin portion and the proximal end fin portion,
Each of the tip side fin portion and the base end side fin portion is set at the rear side of the widthwise center of the wiper blade, and the front side of the top portion has an upward slope toward the rear side. Having an inclined surface,
The wiper blade according to claim 1, wherein a height dimension of the proximal end fin portion is set larger than that of the distal end fin portion. A long blade rubber for wiping the wiping surface; a leaf spring-like backing for applying a pressing force to the blade rubber against the wiping surface; a case for housing the backing and holding the blade rubber; A cap mounted on the longitudinal end portion of the backing, and a connecting portion provided at the intermediate portion in the longitudinal direction to which the tip of the wiper arm is coupled;
A distal end fin portion and a proximal end fin portion are provided on the distal end side and the proximal end side in the longitudinal direction from the connecting portion, respectively.
A wiper blade configured to generate a pressing force toward the wiping surface side by receiving traveling wind at the distal end fin portion and the proximal end fin portion,
The cap on the base end side in the longitudinal direction is provided with a protruding fin portion that protrudes in the longitudinal direction from the blade rubber and generates a pressing force toward the wiping surface side by receiving traveling airflow. Wiper blades.