JP2007237855A - Wiper blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper blade having enhanced wiping performance by preventing a leaf spring attached to blade rubber from inclining relative to a rubber holder. <P>SOLUTION: Retaining pawls 32 are provided at both ends in the longitudinal direction of the rubber holder 16 of the wiper blade 11, and blade rubber 15 is held in the rubber holder 16 by the retaining pawls 32. A leaf spring 25 is fitted in a mounting groove 21a formed at the blade rubber 15 in such an arrangement as to be exposed to the outside from a notch 55 formed at the blade rubber 15. The rubber holder 16 is provided with a leaf spring supporting part 51 which is engaged with the leaf spring 25 in the notch 55 so as to restrict the inclination of the leaf spring 25 relative to the rubber holder 16. <P>COPYRIGHT: (C)2007,JPO&INPIT

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 wiper blades to secure the driver's field of view by wiping rain, snow, splashes from the front car, and the like attached to the front window glass and rear window glass. Such a wiper blade has a rubber blade rubber that is in direct contact with the window glass and a rubber holder that holds the blade rubber. The rubber holder is attached to the tip of the wiper arm, and the wiper motor is driven by the wiper motor. And the glass surface is wiped by reciprocating the wiping range on the wind glass.

As such a wiper blade, for example, as shown in Patent Document 1, a blade rubber having a blade spring member mounted thereon is held by a two-point holding type rubber holder is known. In this case, the leaf spring member is elastically deformed in a direction perpendicular to the glass surface and is mounted in a mounting groove formed in the blade rubber. On the other hand, a pair of holding claws are provided at both ends in the longitudinal direction of the rubber holder. The blade rubber is held by the rubber holder by being provided and engaging these holding claws with holding grooves provided on both sides of the blade rubber. As a result, when the pressing force from the wiper arm is applied to the rubber holder, the pressing force is applied to the blade rubber from two points at both ends of the rubber holder, and the leaf spring is elastically deformed into a shape along the glass surface. Makes an elastic contact with the glass surface with a predetermined distribution pressure.
JP 2005-022632 A

  However, in the conventional two-point support type wiper blade, in order to facilitate the engagement of the holding claw with the holding groove, the width dimension of the holding groove in the direction perpendicular to the window glass is the thickness dimension of the holding claw in that direction. The thickness dimension is increased or decreased by the elastic deformation of the blade rubber. For this reason, when the wiper blade performs a wiping operation and a wiping resistance from the glass surface is applied to the blade rubber, the blade rubber is tilted with respect to the rubber holder by the wiping resistance. Therefore, the leaf spring member attached to the blade rubber is also tilted with the rubber holder, and this tilting may cause vibration or the like in the leaf spring member, which may reduce the wipeability of the wiper blade.

  An object of the present invention is to improve the wiping performance of a wiper blade by preventing the leaf spring member attached to the blade rubber from being tilted with respect to the rubber holder.

  The wiper blade of the present invention is a wiper blade that is attached to the tip of a wiper arm and wipes the windshield of a vehicle, and is formed so as to be elastically deformable in a direction perpendicular to the windshield and a blade rubber that contacts the wind glass. A blade spring member mounted in a mounting groove provided in the blade rubber, and a pair of holding claws at both longitudinal ends, and the blade rubber is engaged with the holding claws in the holding groove of the blade rubber. And a leaf spring support portion provided at at least one longitudinal end portion of the rubber holder and supporting the leaf spring member by sandwiching the leaf spring member from a direction perpendicular to the window glass. To do.

  The wiper blade of the present invention is characterized in that the leaf spring support portions are provided at both longitudinal ends of the rubber holder.

  The wiper blade of the present invention is characterized in that a notch portion connected to the mounting groove is provided in the blade rubber, and the leaf spring support portion is engaged with a portion exposed from the notch portion of the leaf spring member. .

  The wiper blade according to the present invention is characterized in that a protruding portion that protrudes in the wiping direction from the mounting groove is provided in the leaf spring member, and the leaf spring support portion is engaged with the protruding portion.

  According to the present invention, at least one longitudinal end portion of the rubber holder is provided with a leaf spring support portion, and the leaf spring member attached to the blade rubber is sandwiched by the leaf spring support portion from a direction perpendicular to the window glass. Therefore, the leaf spring member can be prevented from tilting with respect to the rubber holder during the wiping operation, and the wiping performance of the wiper blade can be improved.

  Further, according to the present invention, since the leaf spring support portions are provided at each of the longitudinal end portions of the rubber holder, the leaf spring member is supported at two points on both ends of the rubber holder in the longitudinal direction. The tilting of the member can be prevented more firmly.

  Furthermore, according to the present invention, the notch portion connected to the mounting groove is provided in the blade rubber, and the leaf spring support portion is engaged with the portion exposed from the notch portion of the leaf spring member. Those having a uniform width dimension in the wiping direction can be used, whereby the cost of the wiper blade can be reduced.

  Furthermore, according to the present invention, since the leaf spring member is provided with the overhanging portion that protrudes from the mounting groove in the wiping direction, and the leaf spring support portion is engaged with the overhanging portion, the leaf spring member is exposed. Since it is not necessary to provide a notch in the blade rubber, the cost of the wiper blade can be reduced.

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

  FIG. 1 is a perspective view showing a wiper blade according to an embodiment of the present invention. The wiper blade 11 is attached to the tip of a wiper arm 13 of a vehicle 12, and when the wiper arm 13 is driven to swing by a wiper motor (not shown). The front window glass 14 of the vehicle 12 (hereinafter referred to as the window glass 14) is wiped by swinging with the wiper arm 13.

  The wiper blade 11 includes a blade rubber 15 that directly contacts the wind glass 14 and a rubber holder 16 that holds the blade rubber 15. A pair of covers 17 are provided on both sides of the rubber holder 16 in the longitudinal direction. .

  2 is a cross-sectional view taken along the line AA in FIG. 1, and FIGS. 3A and 3B are explanatory views showing details of the holding portion shown in FIG.

  As shown in FIG. 2, the blade rubber 15 is made of a natural rubber or a synthetic rubber as a material and is formed in a bar shape having a uniform cross section in the longitudinal direction and having a head section 21, a lip section 22 and a neck section 23 having a rectangular section. The lip portion 22 comes into contact with the window glass 14. The neck portion 23 is formed with a narrow width in the wiping direction with respect to the head portion 21 and the lip portion 22, whereby the lip portion 22 can be tilted in the wiping direction with respect to the head portion 21.

  Between the head portion 21 and the neck portion 23, there are formed holding grooves 24 that open on both side surfaces in the wiping direction and extend in the longitudinal direction, and mounting grooves 21a are formed in the longitudinal direction on both side surfaces of the head portion 21, respectively. It is formed to extend. A leaf spring member 25 is mounted in each of the mounting grooves 21a.

  The leaf spring member 25 is formed into a flat plate having a length similar to that of the blade rubber 15 by punching a plate material such as a steel plate, and is elastically deformable in a direction perpendicular to the wind glass 14, thereby The blade rubber 15 to which the leaf spring member 25 is attached is elastically deformable integrally with the leaf spring member 25 in a direction perpendicular to the window glass 14, that is, a direction in which the degree of curvature is changed. Further, the leaf spring member 25 is curved in a natural state in a direction in which the leaf spring member 25 can be elastically deformed so as to be stronger than the curvature of the window glass 14, so that the blade rubber 15 to which the leaf spring member 25 is attached also extends from the wind glass 14. In a separated state, it is curved more strongly than the wind glass 14.

  In the illustrated case, the leaf spring member 25 is formed of a steel plate. However, the present invention is not limited to this. For example, the leaf spring member 25 may be elastically deformable in a direction perpendicular to the wind glass 14 such as a hard resin. That's fine.

  On the other hand, as shown in FIG. 2, the rubber holder 16 includes a top wall portion 16a extending in the longitudinal direction by a resin material and a pair of side wall portions 16b extending from both side portions of the top wall portion 16a toward the wind glass 14. It is formed in a U-shaped cross section, and its length is formed to be about half of the blade rubber 15. An intermediate portion of the blade rubber 15 is disposed inside the rubber holder 16 and is covered with the rubber holder 16, and only the lip portion 22 is exposed to the outside. Further, as shown in FIG. 1, a mounting portion 26 is fixed to a substantially middle portion of one side wall portion 16 b in the longitudinal direction, and the rubber holder 16 is attached to the tip of the wiper arm 13 at the mounting portion 26. . Further, fins 27 are integrally formed on the top wall portion 16a, and the aerodynamic characteristics of the wiper blade 11 are improved by the fins 27.

  As shown in FIG. 1, a holding portion 31 is provided at one end of the rubber holder 16 in the longitudinal direction (the side closer to the swing center of the wiper arm 13 when the wiper blade 11 is attached to the wiper arm 13). Yes. As shown in FIG. 3A, the holding portion 31 includes a pair of holding claws 32 (in the figure, only one side is shown, but the other side is provided with the same holding claws). 32 is formed in a rectangular cross-sectional shape protruding from the side wall portion 16b in a direction perpendicular to the longitudinal direction of the blade rubber 15 and parallel to the wiping direction, and engages with the holding groove 24 to hold the blade rubber 15 respectively. is doing. Further, the blade rubber 15 is provided with a pair of stopper portions 33a and 33b that sandwich the holding claws 32 from the longitudinal direction, and the holding claws 32 with respect to the blade rubber 15 are held in the holding grooves 24 by the stopper portions 33a and 33b. Movement in the direction along is restricted. That is, the blade rubber 15 is held by the rubber holder 16 in a state where the holding portion 31 is positioned in the longitudinal direction.

  Similarly, a holding portion 34 is provided at the other end portion of the rubber holder 16 in the longitudinal direction. As shown in FIG. 4B, the holding portion 34 has a pair of holding claws each having a rectangular cross section. 35 (only one side is shown in the figure, but the other side is provided with similar holding claws). These holding claws 35 are engaged with the holding grooves 24, thereby holding the blade rubber 15. . Further, the blade rubber 15 is not provided with a stopper portion at a portion where the holding claw 35 is engaged, and the holding claw 35 is movable along the holding groove 24. That is, the blade rubber 15 is held by the holding portion 34 so as to be movable in the axial direction with respect to the rubber holder 16.

  As described above, in the wiper blade 11, a pair of holding claws 32 and 35 are provided at both ends in the longitudinal direction of the rubber holder 16, and the blades are provided at two points of the holding parts 31 and 34 where the holding claws 32 and 35 are provided. The rubber 15 is held. Therefore, when the pressing force from the wiper arm 13 is applied to the rubber holder 16 via the mounting portion 26, the pressing force is applied to the blade rubber 15 from two points at both ends of the rubber holder 16, that is, from the holding portions 31 and 34. As a result, the blade rubber 15 is elastically brought into contact with the window glass 14.

  4A to 4D are explanatory views showing changes in the shape of the blade rubber when the wiper blade shown in FIG. 1 is in contact with the wind glass. The wiper blade 11 has the blade rubber 15 as the wind glass 14. When not touching, the blade rubber 15 is curved in the direction of closing toward the glass surface with a larger curvature than the maximum curvature in the wiping range of the wind glass 14, as shown in FIG. When the wiper blade 11 is set on the wind glass 14 from this state, first, both end portions of the blade rubber 15 in the longitudinal direction come into contact with the glass surface. When the pressing force of the wiper arm 13 (indicated by an arrow in the figure) is applied to the blade rubber 15 through the rubber holder 16 with both ends of the blade rubber 15 in contact with the glass surface, as shown in FIG. The blade rubber 15 is deformed into an M shape so that the central portion in the longitudinal direction is in contact with the glass surface. At this time, since the blade rubber 15 is restricted from moving in the axial direction with respect to the rubber holder 16 in the holding portion 31 and is allowed to move in the axial direction in the holding portion 34, the pressing force from the wiper arm 13 increases. Accordingly, the blade rubber 15 can be deformed along the glass surface. As shown in FIG. 4 (c), the blade rubber 15 is gradually deformed so as to be along the glass surface. When the blade rubber 15 is completely set on the glass surface, as shown in FIG. The wiping posture is such that the entire longitudinal direction comes into contact with the glass surface by the pressing force from 13. At this time, the leaf spring member 25 is also elastically deformed along the glass surface in the same manner as the blade rubber 15, so that the pressing force of the wiper arm 13 applied to the rubber holder 16 via the attachment portion 26 is elastically deformed of the leaf spring member 25. The blade rubber 15 is dispersed in the longitudinal direction of the blade rubber 15, and the blade rubber 15 contacts the window glass 14 with a uniform distributed pressure in the longitudinal direction. Accordingly, the blade rubber 15 can be wiped in a state where the entire longitudinal direction is uniformly in contact with the wind glass 14, and good wiping performance can be exhibited.

  5 is a perspective view showing details of the rubber holder and the cover shown in FIG. 2, and FIG. 6 is a cross-sectional view taken along line BB in FIG. In the present embodiment, the wiper blade 11 is provided with a pair of covers 17, but these covers 17 have substantially the same structure except that they are bilaterally symmetrical. Only the cover 17 will be described.

  As shown in FIG. 5, the cover 17 is formed separately from the rubber holder 16, and a connecting leg portion 41 is provided at a base end portion thereof so that the connecting leg portion 41 is connected to the rubber holder 16. It has become. As shown in FIG. 6, the cover 17 is formed of a resin material into a U-shaped cross section having a top wall portion 17a and a pair of side wall portions 17b. The top wall portion 17a has a fin of the rubber holder 16. The fin 42 which continues to 27 is integrally formed to enhance its aerodynamic characteristics.

  As shown in FIG. 1, one cover 17 is arranged side by side on the rubber holder 16 on one side in the longitudinal direction of the rubber holder 16, and the other cover 17 is on the other side in the longitudinal direction of the rubber holder 16. Accordingly, the front side portions of the blade rubber 15 protruding from both sides of the rubber holder 16 are covered with the covers 17 respectively. That is, the blade rubber 15 is such that only a part of the lip portion 22 is exposed to the outside and the other part is entirely covered by the rubber holder 16 and the cover 17.

  Thus, since the wiper blade 11 is provided with the pair of covers 17 on both sides in the longitudinal direction of the rubber holder 16, the entire blade rubber 15 can be covered with the rubber holder 16 and the cover 17. Accordingly, the leaf spring member 25 attached to the blade rubber 15 and the burrs generated when the blade rubber 15 is molded are hidden by the cover 17 so that they cannot be seen from the outside, thereby improving the aesthetics of the wiper blade 11. Can do.

  7 is a perspective view showing details of the connecting leg portion, FIG. 8 is a perspective view showing details of the connecting boss portion, and FIG. 9 is a cross-sectional view taken along line CC in FIG.

  As shown in FIG. 7, the connecting leg portion 41 provided on the cover 17 is formed of a resin material integrally with the cover 17 so as to protrude from the base end portion of the cover 17 toward the rubber holder 16. A metal reinforcing member 43 is insert-molded.

  The connecting leg portion 41 is formed in a plate shape whose thickness in the direction perpendicular to the window glass 14 is thin with respect to the cover 17, and a long hole 44 extending in the longitudinal direction is formed in the central portion thereof. Has been. The connecting leg 41 is provided with a pair of engaging recesses 45 located on both sides of the elongated hole 44. The engaging recesses 45 are arranged opposite to each other with their axes aligned with each other. Has been. On the other hand, as shown in FIG. 8, a connecting boss portion 46 is formed at the tip of the rubber holder 16 so as to protrude from the top wall portion 16a toward the wind glass 14 integrally with the top wall portion 16a. A pair of rotating shafts 47 that are coaxial with each other and project in the wiping direction are provided on both side portions of the connecting boss portion 46.

  As shown in FIG. 9, the connecting leg portion 41 has the connecting boss portion 46 disposed in the elongated hole 44 so that the inner surface thereof engages with the outer surface of the connecting boss portion 46, and the engaging recess 45 corresponds. It connects with the connection boss | hub part 46 so that it may engage with the rotating shaft 47 so that rotation is possible. As a result, the cover 17 is connected to the rubber holder 16 so as to be rotatable in the direction perpendicular to the window glass 14 around the rotation shaft 47 in the connecting leg portion 41. Therefore, even if the wiper blade 11 starts the wiping operation and the blade rubber 15 is elastically deformed so as to follow the window glass 14, the cover 17 rotates with respect to the rubber holder 16 and the blade rubber 15 is elastically deformed. Without obstruction, the followability of the wiper blade 11 to the glass surface can be improved.

  FIG. 10 is an explanatory view showing the arrangement of the leaf spring support portions provided in the rubber holder. In the wiper blade 11, leaf spring support portions 51 and 52 are provided at both ends in the longitudinal direction of the rubber holder 16, respectively. The leaf spring member 25 is supported by the spring support portions 51 and 52 to prevent the leaf spring member 25 from tilting in the wiping direction with respect to the rubber holder 16. Since these leaf spring support portions 51 and 52 have the same structure except for their arrangement locations, the leaf spring support portion 51 provided at one end portion in the longitudinal direction of the rubber holder 16 will be described below. Details will be described.

  11 is a perspective view showing details of the leaf spring support portion shown in FIG. 10, and FIG. 12 is a perspective view showing details of a notch portion of the blade rubber.

  As shown in FIG. 11, the leaf spring support portion 51 has an upper support protrusion 53 and a lower support protrusion 54 that are formed integrally with the side wall portion 16 b of the rubber holder 16, and these support protrusions 53, 54. Are arranged side by side at a predetermined interval in a direction perpendicular to the wind glass 14, and project from the inner surface of the side wall portion 16b toward the wiping direction (blade rubber 15 side). The upper support protrusion 53 is provided with an upper support surface 53a formed in a planar shape, and the lower support protrusion 54 is provided with a lower support surface 54a that is planar and parallel to the upper support surface 53a. The distance between the upper support surface 53 a and the lower support surface 54 a is set to be approximately the same as the thickness dimension of the leaf spring member 25 in the direction perpendicular to the window glass 14.

  As can be seen from FIG. 8, the other side wall portion 16b of the rubber holder 16 is also provided with support projections 53, 54 as shown in FIG. A spring support 51 is configured.

  On the other hand, as shown in FIG. 10, the blade rubber 15 has the support protrusions 53, 54 of the rubber holder 16 in order to engage the support protrusions 53, 54 of the leaf spring support portions 51, 52 with the leaf spring member 25. Cutout portions 55 are provided at four locations corresponding to the above.

  As shown in FIG. 12, these notches 55 are formed by notching a part of the head portion 21 that divides the mounting groove 21a. The notches 55 are connected to the mounting groove 21a and the mounting groove 21a is perpendicular to the wind glass 14. It is designed to open in both directions. Thereby, in the part in which the notch portion 55 is formed, the leaf spring member 25 mounted in the mounting groove 21a is exposed to the outside in both directions perpendicular to the wind glass 14.

  FIG. 13 is a cross-sectional view showing a state in which the leaf spring support portion is engaged with the leaf spring member. The rubber holder 16 provided with the leaf spring support portions 51 and 52 is attached to the blade rubber 15 provided with the notch portion 55. As shown in FIG. 13, the support protrusions 53, 54 constituting the leaf spring support portions 51, 52 are respectively disposed in the corresponding cutout portions 55 of the blade rubber 15. At this time, as can be seen from FIG. 9, the leaf spring member 25 is engaged with the upper support protrusion 53 and the lower support protrusion 54 at the portion exposed from the notch portion 55, that is, from the direction perpendicular to the window glass 14. It is sandwiched between the upper support surface 53a and the lower support surface 54a, and is supported by the leaf spring support portion 51 in a state in which movement in the direction perpendicular to the window glass 14 is restricted. Similarly, also in the leaf spring support portion 52, the leaf spring member 25 is sandwiched between the upper support protrusion 53 and the lower support protrusion 54 from the direction perpendicular to the wind glass 14, and is perpendicular to the wind glass 14 in that portion. It is supported by the leaf spring support 52 in a state where movement in the direction is restricted. As a result, the leaf spring member 25 is restricted from tilting in the wiping direction with respect to the rubber holder 16. Therefore, even if the wiper blade 11 starts the wiping operation and the wiping resistance is applied to the blade rubber 15, The spring member 25 is supported by the leaf spring support portions 51 and 52 and is prevented from tilting with respect to the rubber holder 16.

  Thus, in this wiper blade 11, the leaf spring member 25 is sandwiched and supported from the direction perpendicular to the wind glass 14 by the leaf spring support portions 51 and 52 provided at both ends in the longitudinal direction of the rubber holder 16. The tilting of the leaf spring member 25 with respect to the rubber holder 16 during the wiping operation can be prevented, and the wiping performance of the wiper blade 11 can be improved.

  Further, in the wiper blade 11, the leaf spring support portions 51 and 52 are provided at both ends in the longitudinal direction of the rubber holder 16, so that the leaf spring member 25 is provided at two points at both ends in the longitudinal direction of the rubber holder 16. It can support and can prevent the leaf spring member 25 from tilting more firmly.

  Further, in the wiper blade 11, the blade rubber 15 to which the leaf spring member 25 is attached is provided with a notch portion 55 connected to the attachment groove 21 a, and the leaf spring support portion is exposed at a portion exposed from the notch portion 55 of the leaf spring member 25. Since the support protrusions 53 and 54 of 51 and 52 are engaged, the plate spring member 25 having a uniform width dimension in the wiping direction can be used. Thereby, the yield of the leaf | plate spring member 25 can be improved, or the process can be made easy, and the cost of this wiper blade 11 can be reduced.

  14 is a cross-sectional view showing a modification of the engagement structure between the leaf spring member and the leaf spring support portion in the wiper blade shown in FIG.

  In the wiper blade 11 shown in FIG. 1, as can be seen from FIG. 12, the leaf spring member 25 attached to the blade rubber 15 is formed to have a width dimension substantially the same as the width dimension in the wiping direction of the attachment groove 21a. The blade rubber 15 is provided with a notch portion 55, and the leaf spring support portions 51 and 52 are engaged with the leaf spring member 25 at portions exposed from the notch portion 55. .

  On the other hand, in the wiper blade 61 shown in FIG. 14, the leaf spring member 25 attached to the blade rubber 15 is provided with a protruding portion 62 that protrudes from the attachment groove 21 a toward the wiping direction, that is, the side wall portion 16 b of the rubber holder 16. The leaf spring support portions 51 and 52, that is, the support protrusions 53 and 54 are engaged with the projecting portion 62. That is, in the wiper blade 61, the notched portion 55 as shown in FIG. 12 is not provided in the blade rubber 15, and the leaf spring member 25 is projected in the wiping direction with respect to the blade rubber 15, so that the leaf spring member 25. In addition, an engagement portion with the leaf spring support portions 51 and 52 is secured. Therefore, it is not necessary to provide the notch portion 55 in the blade rubber 15, and the processing becomes easy, or a general-purpose product can be used as the blade rubber 15.

  As described above, in the wiper blade 61, the projecting portion 62 projecting from the mounting groove 21a in the wiping direction is provided on the leaf spring member 25, and the leaf spring support portions 51 and 52 are engaged with the projecting portion 62. Further, it is not necessary to provide the blade rubber 15 with the notch 55 for exposing the leaf spring member 25, and the cost of the wiper blade 61 can be reduced.

  FIG. 15 is an explanatory view showing a modification of each support protrusion in the wiper blade shown in FIG.

  In the wiper blade 11 shown in FIG. 1, as shown in FIG. 11, the support surfaces 53 a and 54 a of the support protrusions 53 and 54 of the leaf spring support portions 51 and 52 are formed in a planar shape parallel to each other.

  On the other hand, in the wiper blade 71 shown in FIG. A curved surface that curves in the longitudinal direction is formed. As a result, when the wiper blade 71 performs the wiping operation and the blade rubber 15 follows the glass surface, the leaf spring member 25 bends each of the support protrusions 53 and 54 as shown by a one-dot chain line in FIG. The degree of curvature can be changed along each support surface 53a, 54a. Thereby, the leaf | plate spring member 25 can be elastically deformed smoothly and the wiping property of the wiper blade 71 can be improved.

  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 present embodiment, the wiper blade 11 wipes the front window glass 14 of the vehicle 12, but the present invention is not limited to this, and the wiper blade 11 may wipe the rear window glass of the vehicle 12. Good.

  Further, in the present embodiment, the leaf spring support portions 51 and 52 are provided at both ends in the longitudinal direction of the rubber holder 16, but not limited to this, only at one end portion in the longitudinal direction of the rubber holder 16. You may make it provide.

  Further, in the present embodiment, the cover 17 is connected to each side of the rubber holder 16 in the longitudinal direction. However, the present invention is not limited to this, and the rubber holder 16 of the blade rubber 15 is not provided without providing the cover 17. The removed part may be exposed.

  Furthermore, the present invention can be applied to wiper blades used in various types of wiper apparatuses such as a tandem type and a counter wiping type.

It is a perspective view which shows the wiper blade which is one embodiment of this invention. It is sectional drawing which follows the AA line in FIG. (A), (b) is explanatory drawing which shows the detail of the holding | maintenance part shown in FIG. 1, respectively. (A)-(d) is explanatory drawing which shows the change of the shape of a blade rubber when the wiper blade shown in FIG. 1, respectively contacts window glass. FIG. 3 is a perspective view showing details of a rubber holder and a cover shown in FIG. 2. It is sectional drawing which follows the BB line in FIG. It is a perspective view which shows the detail of a connection leg part. It is a perspective view which shows the detail of a connection boss | hub part. It is sectional drawing which follows the CC line in FIG. It is explanatory drawing which shows arrangement | positioning of the leaf | plate spring support part provided in a rubber holder. It is a perspective view which shows the detail of the leaf | plate spring support part shown in FIG. It is a perspective view which shows the detail of the notch part of a blade rubber. It is sectional drawing which shows the state which made the leaf | plate spring support part engaged with the leaf | plate spring member. It is sectional drawing which shows the modification of the engagement structure of the leaf | plate spring member and leaf | plate spring support part in the wiper blade shown in FIG. It is explanatory drawing which shows the modification of each support protrusion in the wiper blade shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Wiper blade 12 Vehicle 13 Wiper arm 14 Front window glass 15 Blade rubber 16 Rubber holder 16a Top wall part 16b Side wall part 17 Cover 17a Top wall part 17b Side wall part 21 Head part 21a Mounting groove 22 Lip part 23 Neck part 24 Holding groove 25 Plate Spring member 26 Mounting portion 27 Fin 31 Holding portion 32 Holding claw 33a, 33b Stopper portion 34 Holding portion 35 Holding claw 41 Connecting leg portion 42 Fin 43 Reinforcing member 44 Long hole 45 Engaging recess portion 46 Connecting boss portion 47 Rotating shaft 51, 52 leaf spring support portion 53 upper support projection 53a upper support surface 54 lower support projection 54a lower support surface 55 notch portion 61 wiper blade 62 overhang portion 71 wiper blade

Claims (4)

A wiper blade attached to the tip of the wiper arm to wipe the windshield of the vehicle,
A blade rubber in contact with the window glass;
A leaf spring member that is formed to be elastically deformable in a direction perpendicular to the window glass and is mounted in a mounting groove provided in the blade rubber;
A rubber holder that includes a pair of holding claws at both longitudinal ends, and holds the blade rubber by engaging the holding claws with the holding grooves of the blade rubber;
A wiper blade having a leaf spring support portion provided at at least one longitudinal end portion of the rubber holder and supporting the leaf spring member by sandwiching it from a direction perpendicular to the window glass.   2. The wiper blade according to claim 1, wherein the leaf spring support portions are provided at both longitudinal ends of the rubber holder.   3. The wiper blade according to claim 1, wherein a notch portion connected to the mounting groove is provided in the blade rubber, and the leaf spring support portion is engaged with a portion exposed from the notch portion of the leaf spring member. Wiper blade characterized by.   3. The wiper blade according to claim 1, wherein an overhang portion that projects in a wiping direction from the mounting groove is provided in the leaf spring member, and the leaf spring support portion is engaged with the overhang portion. .

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