JP2011255739A - Wiper blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve wiping performance by preventing a wiper blade from floating from a windshield.SOLUTION: A vertebra 33 which bends toward the windshield is mounted on a blade rubber 32 held by a rubber holder, and a pair of engaging convex stripes 41 are arranged with a prescribed space in a longitudinal direction on the vertebra 33. A pair of engaging holes 42 are arranged with a prescribed space in a longitudinal direction on the blade rubber 32, and each engaging convex stripe 41 is engaged to the corresponding engaging hole 42. The space of the engaging hole 42 before engaging to the engaging convex stripe 41 is set narrower than that of the engaging convex stripe 41, and elastic force to a string direction is applied to the vertebra 33 which bends in a circular form, by the blade rubber 32. Thereby, rigidity of a tip side of the vertebra is improved in a direction separating from the windshield.

Description

  The present invention relates to a wiper blade that is attached to the tip of a wiper arm and wipes a windshield of a vehicle.

  Vehicles such as passenger cars, buses, and trucks are provided with a wiper device to secure the driver's field of view by wiping rain, snow, splashes from the front car, etc. attached to the windshield (windshield). Such a wiper device has a wiper blade attached to the tip of the wiper arm. When the wiper arm is driven by a wiper motor mounted on the vehicle body, the wiper blade swings on the wind glass together with the wiper arm. Is supposed to wipe out.

  Such a wiper blade has a structure in which the pressing force applied from the wiper arm is evenly distributed over the entire longitudinal direction in order to improve the wiping property, thereby contacting the glass surface with a predetermined distribution pressure. Has been. As a structure that disperses the pressing force from the wiper arm in the longitudinal direction, a tournament type structure in which a plurality of levers are assembled is known. Instead, a blade spring (vertebra that curves toward the wind glass on the blade rubber) is known. ) Has been developed that can be fitted with a).

  For example, Patent Document 1 discloses a plate formed in a curved shape in which two blade rubbers are held by holding portions provided at both ends in the longitudinal direction of a rubber holder and the blade rubber is curved more strongly than the glass toward the wind glass. A wiper blade is described in which a spring is mounted, and the pressing force from the wiper arm is elastically deformed into a shape along the wind glass by the pressing force from the wiper arm so that the pressing force from the wiper arm is distributed in the longitudinal direction via the leaf spring. ing.

JP 2007-237854 A

  A leaf spring used for such a leaf spring type wiper blade is usually formed by plastically deforming a plate material such as a steel plate into a predetermined curved shape by roll processing or the like, and its rigidity is a direction in which the degree of bending is increased. It is the same in both directions of weakening. Therefore, when a reverse load equivalent to the pressing load necessary for causing the blade rubber to follow the glass surface is applied to the wiper blade, the leaf spring elastically deforms in a direction away from the glass surface due to the load. Therefore, for example, when lift is generated at the tip of the wiper blade due to the influence of traveling wind when the vehicle is traveling at a high speed, the tip of the wiper blade is lifted from the glass surface by the lift and the wiping property is reduced. was there.

  An object of the present invention is to prevent the wiper blade from lifting from the wind glass and to improve its wiping property.

  The wiper blade of the present invention is a wiper blade that is attached to the tip of a wiper arm and wipes a windshield of a vehicle, and is a rubber holder provided with an attachment portion to the wiper arm, and is held by the rubber holder, and the windglass A blade rubber in contact with the window glass, a plate spring formed to be curved toward the window glass, and at least a pair of engagements provided side by side with a predetermined interval in the longitudinal direction on the plate spring. And at least a pair of engaged portions that are provided on the blade rubber and arranged at predetermined intervals in the longitudinal direction and engage with the corresponding engaging portions, respectively, and are engaged with the engaging portions. The interval between the engaged portions before the engagement is made different from the interval between the engaged portions.

  In the wiper blade of the present invention, the pair of engaging portions are provided on the distal end side in the longitudinal direction of the leaf spring, and the pair of engaged portions are disposed on the distal end side in the longitudinal direction of the blade rubber. The distance between the pair of engaged parts is narrower than the distance between the joining parts.

  In the wiper blade of the present invention, the pair of engaging portions are provided in the center portion in the longitudinal direction of the leaf spring, and the pair of engaged portions are provided in the center portion in the longitudinal direction of the blade rubber. The distance between the pair of engaged parts is wider than the distance between the joining parts.

  The wiper blade of the present invention is a wiper blade that is attached to the tip of a wiper arm and wipes a windshield of a vehicle, and is a rubber holder provided with an attachment portion to the wiper arm, and is held by the rubber holder, and the windglass A blade rubber in contact with the window glass, a leaf spring that is curved toward the window glass, and is attached to the blade rubber, and is attached to the blade rubber and arranged at a predetermined interval in the longitudinal direction of the blade rubber. And a bending force generating member that generates a tension between two points and applies a bending force toward the window glass to the blade rubber.

  According to the present invention, by applying elastic force in the chord direction to the bending leaf spring by the blade rubber, the rigidity of the leaf spring can be made different between the direction in which the bending degree is increased and the direction in which the bending degree is reduced. This improves the rigidity of the leaf spring away from the wind glass while applying a predetermined pressing load to the blade rubber by the leaf spring to prevent the blade rubber from lifting off from the wind glass, and the wipeability of this wiper blade Can be increased.

  According to the present invention, the engaging portion and the engaged portion are provided on the distal end side in the longitudinal direction of the wiper blade and the interval between the engaged portions is made narrower than the interval between the pair of engaging portions. The rigidity in the direction away from the window glass of the leaf | plate spring in the front end side of a wiper blade can be improved. Thus, the tip of the blade rubber, which is likely to be lifted when the vehicle is traveling at high speed, can be prevented from lifting from the window glass, and the wipeability of the wiper blade can be improved.

  According to the present invention, the engaging portion and the engaged portion are provided at the center portion in the longitudinal direction of the wiper blade and the interval between the engaged portions is made wider than the interval between the pair of engaging portions. The rigidity of the leaf spring in the direction away from the window glass at the center of the wiper blade can be made lower than the rigidity on the tip side. As a result, even if the pressing load applied to the tip side of the blade rubber by the leaf spring is set strongly, the followability to the wind glass at the center of the blade rubber is improved, and the wipeability of the wiper blade is improved. Can do.

  According to the present invention, since the bending force is applied to the blade rubber by the bending force generating member, the blade rubber is prevented from being lifted from the wind glass by the bending force, and the wiper blade can be wiped off. Can be increased.

It is a perspective view of the wiper device provided with the wiper blade which is one embodiment of the present invention. FIG. 2 is an exploded perspective view of the wiper blade shown in FIG. 1. (A), (b) is explanatory drawing which shows the detail of the holding | maintenance part provided in the rubber holder shown in FIG. 2, respectively. (A)-(d) is explanatory drawing which shows the change of the shape of a blade rubber when a wiper blade contacts a windshield, respectively. It is a partially cutaway perspective view showing details of an engagement convex piece provided in the vertebra and an engagement hole provided in the blade rubber. It is explanatory drawing which compares and shows the space | interval of the engagement convex piece and engagement hole before a vertebra is mounted | worn with a blade rubber. It is sectional drawing of a blade rubber in the state where the vertebra was mounted. It is explanatory drawing which shows the elastic force applied to a vertebra from a blade rubber between each engagement convex piece. (A), (b) is explanatory drawing which shows the modification of the wiper blade shown in FIG. 1, respectively.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of a wiper device provided with a wiper blade according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the wiper blade shown in FIG. 1, and FIGS. These are explanatory drawings which show the detail of the holding | maintenance part provided in the rubber holder shown in FIG. 2, respectively.

  A wiper device 11 shown in FIG. 1 is provided on a vehicle 12 such as an automobile and wipes a windshield 13 of the vehicle 12 and includes a wiper arm 14 and a wiper blade 15.

  The wiper arm 14 includes an arm head 16 made of aluminum die cast, and a base end portion of the arm head 16 is fixed to a pivot shaft 21 that is swingably provided on a vehicle body 18 by a nut 17. The pivot shaft 21 is connected to a wiper motor (not shown) mounted on the vehicle body 18 by a link mechanism (not shown), and is driven by the wiper motor to swing within a predetermined angle range. A retainer 22 formed in a substantially U-shaped cross section with a steel plate or the like is connected to the tip of the arm head 16 by a connecting shaft 23 so as to be rotatable in a direction approaching and separating from the windshield 13. The arm stay 24 formed of a plate-shaped bar is fixed by caulking. A spring (not shown) that energizes the retainer 22 in the direction toward the windshield 13 with the connecting shaft 23 as an axis is accommodated inside the retainer 22, and the wiper arm 14 moves the wiper blade 15 by the spring force of this spring. A predetermined pressing force directed to the windshield 13 is applied.

  As shown in FIG. 2, the wiper blade 15 includes a rubber holder 31, a blade rubber 32, and a vertebra 33 as a pair of leaf springs.

  The rubber holder 31 includes a primary lever 34 and a pair of secondary levers 35. The primary lever 34 is formed of a resin material in a cover shape having a substantially U-shaped cross section (see FIG. 3), and its length dimension is a blade rubber. It is about half of 32. A mounting portion 36 is provided at the center in the longitudinal direction of the primary lever 34, and the primary lever 34, that is, the wiper blade 15 is attached to the tip of the arm stay 24 of the wiper arm 14 at the mounting portion 36. The pair of secondary levers 35 is formed of a resin material in a cover shape having a substantially U-shaped cross section, and is connected to both ends of the primary lever 34 in the longitudinal direction.

  As shown in FIG. 3A, a pair of holding claws 37a are provided on one end side in the longitudinal direction of the primary lever 34 (side closer to the pivot shaft 21 when the wiper blade 15 is attached to the wiper arm 14). As shown in FIG. 3B, a pair of holding claws 37b are provided on the other end side of the primary lever 34 in the longitudinal direction. 3, only the holding claws 37a and 37b provided on one side in the width direction of the primary lever 34 are illustrated, but similar holding claws 37a and 37b are also provided on the other side in the width direction of the primary lever 34. Provided.

  On the other hand, as shown in FIG. 2 and FIG. 3, the blade rubber 32 is formed of a rubber material into a bar shape having a substantially uniform cross section in the longitudinal direction, which includes a head section 32a having a rectangular section, a lip section 32b, and a neck section 32c. It can be bent in a direction along the windshield 13. Holding grooves 38 extending between the head portion 32a and the lip portion 32b and extending in the longitudinal direction are provided on both side portions of the blade rubber 32, and holding claws 37a, 37a of the primary lever 34 are provided in these holding grooves 32d. By engaging 37b, the blade rubber 32 is held at two points by the primary lever.

  The portions of the blade rubber 32 that protrude from the primary lever 34 to both sides in the longitudinal direction are covered by the corresponding secondary levers 35. Further, the rubber holder 31 is provided with fins 39 in order to improve the aerodynamic characteristics of the wiper blade 15 when the vehicle 12 is traveling.

  As shown in FIG. 3A, the holding groove 32d of the blade rubber 32 is provided with a pair of stopper portions 38a and 38b that sandwich the holding claw 37a from the longitudinal direction, and the holding claw 37a is formed by these stopper portions 38a and 38b. Movement of the blade rubber 32 in the direction along the holding groove 32d is restricted. That is, the blade rubber 32 is held by the primary lever 34 with the holding claw 37a being positioned in the longitudinal direction. On the other hand, as shown in FIG. 3B, the blade rubber 32 is not provided with a stopper portion at the portion where the holding claw 37b is engaged, and the holding claw 37b moves in the longitudinal direction along the holding groove 32d. It is free. That is, the blade rubber 32 is held by the primary lever 34 so as to be movable in the axial direction by the holding claws 37b.

  As shown in FIG. 2, the vertebra 33 is formed in a shape that curves toward the windshield 13 by plastically deforming a strip-shaped steel plate having the same length as the blade rubber 32 by roll processing or the like. The front glass 13 is elastically deformable in a direction perpendicular to the glass surface. The vertebra 33 is curved more strongly than the windshield 13 in the natural state.

  As shown in FIGS. 3A and 3B, mounting grooves 32e are provided on both sides of the head portion 32a of the blade rubber 32, and a pair of vertebras 33 are respectively mounted in the corresponding mounting grooves 32e. Thereby, the blade rubber 32 is elastically deformable in a direction perpendicular to the windshield 13 together with the vertebra 33, that is, a direction in which the degree of curvature thereof is changed, and the pressing force applied from the wiper arm 14 to the wiper blade 15 is applied to the vertebra 33 by the vertebra 33. By being elastically deformed along the windshield 13, the blade rubber 32 is dispersed in the longitudinal direction.

  In the present embodiment, the vertebra 33 is formed of a steel plate. However, the present invention is not limited to this, and any other material such as a hard resin material may be used as long as the material can generate predetermined elasticity. You may do it.

  4A to 4D are explanatory views showing changes in the shape of the blade rubber when the wiper blade is in contact with the windshield.

  When the blade rubber 32 of the wiper blade 15 is in a natural state, that is, not in contact with the windshield 13, as shown in FIG. 4A, the blade rubber 32 has a curvature larger than the maximum curvature in the wiping range of the windshield 13 on the glass surface. It is curved in the direction of closing toward it. When the wiper blade 15 is set on the windshield 13 from this state, first, both end portions of the blade rubber 32 in the longitudinal direction come into contact with the windshield 13. When the pressing force of the wiper arm 14 (indicated by an arrow in the figure) is applied to the blade rubber 32 via the rubber holder 31 with both ends of the blade rubber 32 in contact with the windshield 13, as shown in FIG. In addition, the blade rubber 32 is deformed into an M shape so that the central portion in the longitudinal direction is in contact with the windshield 13. At this time, the blade rubber 32 is restricted from moving in the axial direction relative to the rubber holder 31 in the holding claw 37a, and is allowed to move in the axial direction in the holding claw 37b, so that the pressing force from the wiper arm 14 increases. Accordingly, it can be deformed along the glass surface of the windshield 13. Then, as shown in FIG. 4C, the blade rubber 32 is gradually deformed to be in a state along the glass surface, and when completely set on the windshield 13, as shown in FIG. Due to the pressing force from the wiper arm 14, the entire longitudinal direction comes into contact with the glass surface of the windshield 13. At this time, the vertebra 33 is also elastically deformed into a shape along the windshield 13 in the same manner as the blade rubber 32, so that the pressing force of the wiper arm 14 applied to the rubber holder 31 via the mounting portion 36 is caused by the elastic deformation of the vertebra 33. Thus, the blade rubber 32 comes into contact with the windshield 13 with a uniform distributed pressure in the longitudinal direction.

  FIG. 5 is a partially cutaway perspective view showing details of the engagement convex piece provided in the vertebra and the engagement hole provided in the blade rubber, and FIG. 6 shows the engagement convex piece before the vertebra is attached to the blade rubber. It is explanatory drawing which compares and shows the space | interval of a hole. FIG. 7 is a cross-sectional view of the blade rubber with the vertebra mounted thereon, and FIG. 8 is an explanatory diagram showing the elastic force applied from the blade rubber to the vertebra between the engaging convex pieces.

  A pair of engagement convex pieces (engagement portions) 41 are provided on the distal end side in the longitudinal direction of the vertebra 33 (the distal end side farther from the pivot shaft 21 when the wiper blade 15 is attached to the wiper arm 14). . These engaging convex pieces 41 are each formed in a rectangular plate shape integrally projecting with the vertebra 33 and projecting from one side of the vertebra 33, and as shown in FIG. Are arranged side by side.

  On the other hand, a pair of engagement holes (engaged portions) 42 are provided at the distal end side in the longitudinal direction of the blade rubber 32 (the distal end side farther from the pivot shaft 21 when the wiper blade 15 is attached to the wiper arm 14). It has been. These engagement holes 42 are formed in wall-like portions that separate the mounting grooves 32e of the blade rubber 32, and pass through the wall-like portions in a direction perpendicular to the longitudinal direction. Further, as shown in FIG. 6, the pair of engagement holes 42 are arranged side by side with a predetermined interval S2 in the longitudinal direction, and the interval S2 is narrower than the interval S1 of the pair of engagement convex pieces 41. Has been.

  Each vertebra 33 is mounted in the mounting groove 32e of the blade rubber 32 with the engaging convex piece 41 facing inward (the bottom side of the mounting groove 32e). When the vertebra 33 is mounted in the mounting groove 32e, each engagement convex piece 41 is inserted into the corresponding engagement hole 42 and engaged with the engagement hole 42 as shown in FIG.

  Here, before the vertebra 33 is mounted in the mounting groove 32e of the blade rubber 32, that is, before the engagement convex piece 41 is engaged with the engagement hole 42, the interval S2 between the pair of engagement holes 42 is the pair of engagements. Since it is narrower than the interval S1 between the mating convex pieces 41, when the pair of engaging convex pieces 41 engage with the corresponding pair of engaging holes 42, the wall shape between the engaging holes 42 of the blade rubber 32 is increased. This portion is stretched by being elastically deformed in the longitudinal direction so that the longitudinal interval S2 of the pair of engaging holes 42 is matched with the longitudinal interval S1 of the pair of engaging convex pieces 41. Then, due to the elastic deformation, an elastic force is applied between the engagement convex pieces 41 arranged in the longitudinal direction of the vertebra 33 in the direction in which the blade rubber 32 brings them closer to each other. That is, as shown in FIG. 8, the vertebra 33 that is curved in an arc shape has an elastic force in a direction in which the engagement convex pieces 41 are brought closer to each other from the blade rubber 32. Working between the points, the vertebra 33 can generate bending and compressive forces.

  When an elastic force in the chord direction is applied from the blade rubber 32 to the arcuate curved vertebra 33, the elastic force in the direction of increasing the degree of curvature toward the windshield 13 on the tip side of the vertebra 33 is increased. . That is, the vertebra 33 functions as a bending generating member that generates a tension between two points provided in the blade rubber 32, that is, between the pair of engagement holes 42, and applies a bending force toward the windshield 13 to the blade rubber 32.

  On the other hand, since the elastic force in the direction of narrowing the distance (distance between two points shown in FIG. 8) is applied to the pair of engaging convex pieces 41 from the blade rubber 32, the direction away from the windshield 13 of the vertebra 33, that is, the degree of bending The elastic deformation in the direction of weakening is controlled by the blade rubber 32. That is, the rigidity in the direction away from the windshield 13 on the tip side of the vertebra 33 is enhanced by the blade rubber 32 constraining the interval between the engaging convex pieces 41 arranged in the longitudinal direction. As a result, even if the vertebra 33 is formed so as to generate a necessary pressing load for causing the blade rubber 32 to follow the glass surface of the windshield 13, the vertebra 33 is elastically deformed in a direction away from the windshield 13. Can be made larger than the pressing load. Therefore, even if lift is generated on the tip side of the wiper blade 15 due to the influence of the traveling wind when the vehicle 12 is traveling at high speed, the rigidity in the lifting direction of the vertebra 33 is enhanced. It is possible to improve the wiping performance of the wiper blade 15 by suppressing the tip portion of the windshield from being lifted from the glass surface of the windshield 13.

  As described above, in the wiper blade 15, the elastic force between the two points is applied to the vertebra 33 that is curved in an arc shape by the blade rubber 32, so that the rigidity in the direction in which the degree of bending of the vertebra 33 is weakened is increased in the direction in which the degree of bending is increased. It can be higher than the rigidity. Thus, while applying a predetermined pressing load to the blade rubber 32 by the vertebra 33, the rigidity of the vertebra 33 in the direction away from the windshield 13 is increased, and the lift of the blade rubber 32 from the windshield 13 is prevented. The wiping property of the blade 15 can be improved.

  In the wiper blade 15, the engagement convex piece 41 and the engagement hole 42 are provided on the distal end side in the longitudinal direction of the wiper blade 15, and the distance between the engagement holes 42 is larger than the distance S 1 between the pair of engagement convex pieces 41. Since S2 is narrowed and the rigidity in the direction away from the windshield 13 of the vertebra 33 on the front end side of the wiper blade 15 is increased, the front end portion of the blade rubber 32 that is likely to be lifted when the vehicle 12 is traveling at a high speed or the like. It is possible to prevent the wiper blade 15 from being lifted from the windshield 13 and to improve the wipeability of the wiper blade 15.

  FIGS. 9A and 9B are explanatory views showing modifications of the wiper blade shown in FIG.

  In the wiper blade 15 shown in FIG. 1, as shown in FIG. 2, the pair of engaging convex pieces 41 are provided on the distal end side in the longitudinal direction of the vertebra 33, and the pair of engaging holes 42 are disposed on the distal end in the longitudinal direction of the blade rubber 32. The distance S2 between the pair of engagement holes 42 is narrower than the distance S1 between the pair of engagement protrusions 41.

  On the other hand, in the case shown in FIG. 9A, the pair of engaging convex pieces 41 are provided in the central portion in the longitudinal direction of the vertebra 33, and the pair of engaging holes 42 are disposed in the central portion in the longitudinal direction of the blade rubber 32. And the interval S2 between the pair of engaging holes 42 is made wider than the interval S1 between the pair of engaging convex pieces 41. In other words, in the case shown in FIG. 9A, a pair of engagement is performed before the vertebra 33 is mounted in the mounting groove 32 e of the blade rubber 32, that is, before the engagement convex piece 41 is engaged with the engagement hole 42. Since the interval S2 between the holes 42 is wider than the interval S1 between the pair of engaging convex pieces 41, when the pair of engaging convex pieces 41 engage with the corresponding pair of engaging holes 42, each of the blade rubbers 32 is provided. The wall-like portion between the engagement holes 42 is crushed in the longitudinal direction so that the longitudinal interval S2 of the pair of engagement holes 42 matches the longitudinal interval S1 of the pair of engagement protrusions 41. It will be compressed. Then, due to the elastic deformation, an elastic force in a direction away from the blade rubber 32 is applied between the engagement convex pieces 41 of the vertebra 33. That is, an elastic force is applied to the central portion in the longitudinal direction of the vertebra 33 in the direction that weakens the degree of curvature, contrary to the case shown in FIG. Therefore, the rigidity in the direction away from the windshield 13 of the vertebra 33 at the center portion of the wiper blade 15 can be made lower than the rigidity on the tip end side thereof, whereby the vertebra 33 moves toward the tip end side of the blade rubber 32. Even if the pressing load to be applied is set strongly, the followability to the windshield 13 at the center in the longitudinal direction of the blade rubber 32 can be enhanced, and the wiping performance of the wiper blade 15 can be enhanced.

  Note that the engagement convex piece 41 and the engagement hole 42 are not limited to the front end side of the wiper blade 15 as shown in FIG. 6 or the central portion of the wiper blade 15 shown in FIG. As shown in b), the case shown in FIG. 6 and the case shown in FIG. 9A may be combined and provided at both the front end side and the central portion of the wiper blade 15 in the longitudinal direction.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the wiper blade 15 wipes the windshield 13 of the vehicle 12, but is not limited thereto, and may wipe the rear glass of the vehicle 12.

  In the above-described embodiment, a pair of the engagement convex piece 41 and the engagement hole 42 are provided. However, the present invention is not limited thereto, and two or more of each may be provided.

  Furthermore, in the above-described embodiment, the engaging convex piece 41 and the engaging hole 42 are provided on the distal end side of the wiper blade 15, but not limited thereto, the engaging convex piece 41 and the engaging hole 42 are provided. May be provided on the distal end side closer to the pivot shaft 21 when the wiper blade 15 of the wiper blade 15 is attached to the wiper arm 14, or may be provided on both distal end sides thereof.

11 Wiper device 12 Vehicle 13 Windshield (wind glass)
DESCRIPTION OF SYMBOLS 14 Wiper arm 15 Wiper blade 16 Arm head 17 Nut 18 Car body 21 Pivot shaft 22 Retainer 23 Connection shaft 24 Arm stay 31 Rubber holder 32 Blade rubber 32a Head part 32b Lip part 32c Neck part 32d Holding groove 32e Mounting groove 33 Vertebra (plate spring, Bending material)
34 Primary lever 35 Secondary lever 36 Mounting portions 37a, 37b Holding claws 38a, 38b Stopper portion 39 Fin 41 Engaging protrusion (engaging portion)
42 engaging hole (engaged part)
S1, S2 interval

Claims (4)

A wiper blade that is attached to the tip of the wiper arm and wipes the windshield of the vehicle,
A rubber holder provided with a mounting portion to the wiper arm;
A blade rubber held by the rubber holder and in contact with the window glass;
A leaf spring that is curved toward the window glass and is attached to the blade rubber;
At least a pair of engagement portions provided on the leaf springs with a predetermined interval in the longitudinal direction; and
The blade rubber is provided side by side with a predetermined interval in the longitudinal direction, and has at least a pair of engaged portions that engage with the corresponding engaging portions, respectively.
A wiper blade characterized in that an interval between the engaged portions before engaging with the engaging portion is different from an interval between the engaging portions.   2. The wiper blade according to claim 1, wherein the pair of engaging portions are provided on a distal end side in the longitudinal direction of the leaf spring, and the pair of engaged portions are disposed on a distal end side in the longitudinal direction of the blade rubber, A wiper blade characterized in that a distance between the pair of engaged parts is narrower than a distance between the engaging parts.   2. The wiper blade according to claim 1, wherein the pair of engaging portions are provided in a central portion in the longitudinal direction of the leaf spring, and the pair of engaged portions are provided in a central portion in the longitudinal direction of the blade rubber. A wiper blade characterized in that a distance between the pair of engaged parts is wider than a distance between the engaging parts. A wiper blade that is attached to the tip of the wiper arm and wipes the windshield of the vehicle,
A rubber holder provided with a mounting portion to the wiper arm;
A blade rubber held by the rubber holder and in contact with the window glass;
A leaf spring that is curved toward the window glass and is attached to the blade rubber;
A bending force generating member that is attached to the blade rubber and generates a tension between two points arranged in the longitudinal direction of the blade rubber at a predetermined interval to apply a bending force toward the window glass to the blade rubber; A wiper blade characterized by that.

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