JP2008114746A - Wiper blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper blade improved in wiping performance thereof by restricting tilt and twist of a blade rubber when wiping a window glass and smoothed in the work for assembling a blade holder and the blade rubber. <P>SOLUTION: The wiper blade 10 has the blade rubber 13 comprising a head part 13a, a lip part 13b brought in contact with the window glass and a coupling part positioned between the head portion 13a and the lip portion 13b, and the blade holder 12 comprising holding parts 16 for holding the head part 13a in both ends in the longitudinal direction and coupled to a wiper arm 4 in an arm coupling portion 15. The holding parts 16 respectively comprise a pair of holding claws opposite to each other on both sides of the coupling portion, and a part of the blade rubber 13 to be pinched by the holding claws of the coupling portion is formed wider than other parts. <P>COPYRIGHT: (C)2008,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.

  Passenger cars, buses, trucks, and other vehicles are equipped with wiper blades to wipe out the rain, snow, insects, and splashes from the front car to ensure the driver's visibility. . The wiper blade is attached to the tip of a wiper arm of the vehicle, and when the wiper arm is driven by a wiper motor, the wiper blade swings between a lower inversion position on the lower end of the window glass and an upper inversion position on the glass surface to wipe the glass surface. .

As such a wiper blade, by attaching a blade holder provided with holding parts at both ends in the longitudinal direction to the wiper arm, and attaching a blade rubber with a leaf spring member attached to the blade holder in each holding part, It is known that the pressing force from the wiper arm is applied to the blade rubber from two locations of each holding portion separated in the longitudinal direction so that the distributed pressure on the glass surface of the blade rubber is made uniform (for example, patent document) 1).
JP 2005-231499 A

  By the way, as shown in FIG. 12, in the conventional wiper blade 110 as described above, the blade rubber 113 has a width in the width direction W (parallel to the wind glass and short direction) to hold the blade rubber 113. The inner size of the holder 116 of the holder 112 was slightly smaller. Further, the thickness of the blade rubber 113 in the thickness direction H (direction perpendicular to the window glass) is also slightly smaller than the inner dimension of the holding portion 116 of the blade holder 112 that holds the blade rubber 113. This is because when the blade rubber 113 and the blade holder 112 are assembled, the blade rubber 113 with the leaf spring member 114 attached is sequentially inserted into the two holding portions 116 from the longitudinal direction of the blade holder 112 and attached. This is because if the size of the blade rubber 113 does not have a certain margin with respect to the holding part 116, the assembling work cannot be performed or it becomes very complicated.

  However, in the wiper blade 110 as described above, the blade rubber 113 cannot be firmly fixed by the blade holder 112. Therefore, when a wiping resistance is applied to the blade rubber 113 by starting the wiping operation of the window glass, FIG. As shown in FIG. 4, the blade rubber 113 may be tilted or twisted more than necessary in the holding portion 116. In particular, tilting and twisting are likely to occur when performing a reversing operation at the reversing position, which prevents normal wiping operations from being performed, leaving behind wiping, judder (vibration), abnormal noise, etc., and reducing wiper blade wiping performance. There was a case.

  An object of the present invention is to improve the wiper blade wiping performance by suppressing the inclination and twist of the blade rubber during the wiping operation of the wind glass, and to smoothly perform the assembly work of the blade holder and the blade rubber. It is to provide a wiper blade capable of performing the above.

  The wiper blade of the present invention is a wiper blade that is attached to the tip of a wiper arm that is swingably attached to a vehicle and wipes the window glass of the vehicle, and includes a head portion, a lip portion that contacts the window glass, A blade rubber having a head portion and a connecting portion positioned between the lip portions; a blade holder having a holding portion for holding the head portion at both longitudinal ends; and a blade holder connected to the wiper arm at the arm connecting portion; Each of the holding portions includes a pair of holding claws opposed to each other with the connecting portion interposed therebetween, and a portion of the blade rubber that is sandwiched between the holding claws of the connecting portion is wider than other portions. It is a wide part.

  In the wiper blade of the present invention, the width of the wide portion of the blade rubber is equal to or greater than the width between the pair of holding claws.

  In the wiper blade of the present invention, the width of the wide portion of the blade rubber is the maximum width between the pair of holding claws.

  The wiper blade of the present invention is characterized in that the connecting portion of the blade rubber is formed so that the width gradually increases from another portion toward the wide portion.

  The wiper blade of the present invention is characterized in that a portion of the blade rubber that is held by the holding portion of the head portion is a thick portion that is thicker than other portions.

  According to the present invention, each of the two holding portions of the blade holder has a pair of holding claws facing each other with the blade rubber connecting portion interposed therebetween, and the portion sandwiched by the holding claws in the blade rubber connecting portion is: Since the width is wider than other parts, the blade rubber is firmly fixed without rattling in the holding portion of the blade holder. For this reason, it is possible to suppress the inclination and twist of the blade rubber during the wiping operation of the wind glass, and to perform a normal wiping operation that does not cause unwiping, judder (vibration), abnormal noise, or the like. As a result, the wipeability of the wiper blade can be improved.

  In addition, the wide part of the blade rubber connecting part is formed only in the part corresponding to the holding part of the blade holder, and the width of the other part is narrow. Therefore, when assembling the blade rubber and the blade holder, When the rubber is sequentially inserted into the two holding portions from the longitudinal direction of the blade holder and attached, the blade rubber can be inserted into the blade holder with almost no resistance. Thereby, the assembly work of the blade holder and the blade rubber can be performed smoothly without any trouble.

  Further, according to the present invention, since the width of the wide portion in the connecting portion of the blade rubber is equal to or larger than the width between the pair of holding claws in the holding portion of the blade holder, the connecting portion is gripped by each holding claw. The blade rubber can be securely fixed by the holding portion of the blade holder.

  Further, according to the present invention, since the width of the wide portion of the blade rubber connecting portion is the maximum width between the pair of holding claws in the holding portion of the blade holder, there is a problem in assembling the blade holder and the blade rubber. It is possible to reduce the number of parts to come as much as possible, and to efficiently fix the blade rubber with the holding part of the blade holder.

  Further, according to the present invention, since the connecting portion of the blade rubber is formed so that the width gradually increases from the other part toward the wide portion, the wide portion can be smoothly smoothed when the blade holder and the blade rubber are assembled. The blade holder can be inserted into the blade holder, and the blade holder and the blade rubber can be assembled more smoothly.

  Further, according to the present invention, since the thickness of the part held by the holding part of the blade holder in the head part of the blade rubber is a thicker part than the other part, The blade rubber is fixed in the width direction (parallel to the wind glass and in the short direction) at the wide part of the blade rubber connecting part, and the blade rubber is fixed in the thickness direction (direction perpendicular to the wind glass) at the thick part. The blade rubber can be more securely fixed by the holding portion of the blade holder.

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

  FIG. 1 is an explanatory view showing an outline of a wiper device having a wiper blade according to an embodiment of the present invention. A vehicle 1 shown in FIG. 1 has a front windshield 2 (hereinafter referred to as a windshield 2). A wiper device 3 is provided to secure the driver's field of view by wiping off attached rain, splashes from the front car, and the like. The wiper device 3 includes two wiper arms 4 on the driver's seat side and the passenger seat side, and each wiper arm 4 is fixed to the wiper shaft 5 at the base end portion. Each wiper shaft 5 is swingably supported by the vehicle 1 and connected to a wiper motor 7 via a link mechanism 6. When the wiper motor 7 is operated, the wiper arm 4 swings within a predetermined range.

  A wiper blade 10 is attached to each end of the wiper arm 4, and these wiper blades 10 are in elastic contact with the wind glass 2 with a pressing force applied from the wiper arm 4. When the wiper motor 7 operates and the wiper arm 4 swings, each wiper blade 10 swings the wiping range 2 a on the glass surface and wipes the wind glass 2.

  FIG. 2 is a perspective view showing a wiper blade according to an embodiment of the present invention. The wiper blade 10 includes a blade holder 12 that is swingably attached to the tip of a wiper arm 4 that is swingably supported by a vehicle body, and a blade rubber 13 that is held by the blade holder 12. 13 is elastically in contact with the window glass 2 by applying a pressing force of the wiper arm 4 through the blade holder 12.

  3 is a cross-sectional view taken along line AA shown in FIG. 2, and FIG. 4 is a cross-sectional view taken along line BB shown in FIG. 5 is a cross-sectional view taken along the line C-C shown in FIG. 4, FIG. 6 is a cross-sectional view showing details of an engagement portion between the wide portion and the holding claw shown in FIG. 5, and FIG. 5 is a cross-sectional view taken along line DD shown in FIG.

  The blade rubber 13 is made of an elastic material such as natural rubber or synthetic rubber. As shown in FIGS. 3 and 4, the head portion 13a, the lip portion 13b that contacts the window glass, the head portion 13a, and the lip portion. It is formed in a substantially rod-like shape with a uniform cross section in the longitudinal direction, and is provided with a connecting portion 13c located between 13b and connecting both. The lip portion 13b is connected to the connecting portion 13c via the connecting portion 13c and a neck portion 13d formed with a narrower width in the wiping direction than the lip portion 13b, whereby the lip portion 13b is connected to the head portion 13a and the connecting portion. It can be tilted in the wiping direction with respect to 13c.

  On both side portions of the head portion 13a in the wiping direction, mounting grooves 13e that are recessed in the wiping direction are formed. Each of the mounting grooves 13e is formed to extend in the longitudinal direction so as to reach the other end from one end in the longitudinal direction of the head portion 13a, and each mounting groove 13e is separated from each other by the partition wall portion 13f. They are arranged side by side in the wiping direction. A leaf spring member 14 called a vertebra is incorporated in the mounting grooves 13e.

  The plate spring member 14 is formed into a flat plate having a length similar to that of the blade rubber 13 by punching a plate material such as a steel plate, and is elastically deformable in a direction perpendicular to the window glass. Therefore, the blade rubber 13 in which the leaf spring member 14 is incorporated is elastically deformable integrally with the leaf spring member 14 in a direction perpendicular to the window glass, that is, a direction in which the degree of curvature with respect to the glass surface is changed. Further, the leaf spring member 14 is naturally curved in a direction perpendicular to the wind glass in a natural state, so that the blade rubber 13 in which the leaf spring member 14 is incorporated is also made from the wind glass. In the separated state, it is curved more strongly than the wind glass.

  In the present embodiment, the leaf spring member 14 formed of a steel plate is used. However, the present invention is not limited to this. For example, a leaf spring member formed of a hard resin or the like is used in a direction perpendicular to the window glass. As long as it can be elastically deformed, a leaf spring member made of another material may be used.

  The blade holder 12 is formed of a resin material into a substantially U-shaped cross section having a top wall portion 12a and a pair of side wall portions 12b, and its length dimension is about half that of the blade rubber 13. As shown in FIG. 2, an arm connecting portion 15 is provided at a substantially intermediate portion in the longitudinal direction of the top wall portion 12a. The blade holder 12 is connected to and attached to the tip of the wiper arm 4 at the arm connecting portion 15. . The arm connecting portion 15 is provided on the front wall surface 12c of the blade holder 12 that is disposed on the front side of the vehicle when the wiper blade 10 is mounted on the vehicle, that is, at a position away from the vehicle interior.

  As shown in FIG. 2, holding portions 16 and 16 are provided at both ends in the longitudinal direction of the blade holder 12, and as shown in FIGS. 3 to 6, these holding portions 16 are respectively connected to the side wall portion 12 b and the side wall portion 12 b. It has a pair of holding claws 17 and 17 formed integrally. These holding claws 17, 17 are formed in the shape of a rectangular cross section projecting from the side wall portion 12 b in a direction perpendicular to the longitudinal direction of the blade rubber 13 and parallel to the wiping direction. It arrange | positions so that it may oppose.

  On the other hand, a pair of holding grooves 18 and 18 are provided between the head portion 13a and the lip portion 13b, that is, on both sides of the connecting portion 13c, with the upper and lower portions partitioned by the arm portion 13g and the head portion 13a, respectively. . These holding grooves 18 and 18 extend along the longitudinal direction of the blade rubber 13 and are arranged side by side in the wiping direction across the connecting portion 13c. The holding claws 17 and 17 hold the connecting portion 13c. , Respectively, are adapted to engage with the corresponding holding grooves 18, 18. As a result, as shown in FIG. 4, the head portion 13 a of the blade rubber 13 is held between the holding claws 17, the top wall portion 12 a, and both side wall portions 12 b and held by the holding portions 16 and 16.

  Here, as shown in FIGS. 4, 5 and 6, wide portions 13h and 13h are provided at portions corresponding to the holding portions 16 and 16 of the connecting portion 13c of the blade rubber 13, respectively. The parts 16 and 16 hold the blade rubber 13 in the corresponding wide parts 13h and 13h. As shown in FIG. 6, the width dimension w1 of most portions of the connecting portion 13c of the blade rubber 13 is formed to be narrower than the width w2 between the holding claws 17, 17, and the holding claws 17, 17 of the connecting portion 13c are formed. The portions sandwiched between the portions are the wide portions 13h and 13h described above, and the width dimension w3 thereof is wider than the width dimension w1 of other portions. Thereby, the clearance gap between the front-end | tip part of each holding claw 17 and 17 and the connection part 13c of the blade rubber 13 is made small, and the blade rubber 13 is firmly fixed in the holding part 16 without rattling. Can do. For this reason, the inclination and twist of the blade rubber 13 during the wiping operation of the wind glass 2 can be suppressed, and a normal wiping operation in which no wiping residue, judder (vibration), abnormal noise or the like occurs can be performed.

  Moreover, the wide portion 13h is formed only in the portion corresponding to the holding portions 16 and 16 of the connecting portion 13c, and the other portions are narrower than the wide portion 13h. Therefore, the blade rubber at the time of manufacturing the wiper blade 10 When the blade rubber 13 is inserted into the two holding parts 16 and 16 sequentially from the longitudinal direction of the blade holder 12 and mounted, the blade rubber 13 is inserted into the blade holder 12 with almost no resistance. can do. Thereby, the assembly work of the blade holder 12 and the blade rubber 13 can be performed smoothly without any trouble.

  In the present embodiment, the width of the wide portion 13h in the connecting portion 13c of the blade rubber 13 is equal to or greater than the width between the pair of holding claws 17 and 17 in the holding portion 16 of the blade holder 12 (more specifically, holding The width between the claws 17 is exactly the same as or slightly wider. Accordingly, the blade rubber 13 can be reliably fixed between the holding claws 17 and 17 of the holding portion 16 of the blade holder 12.

  Furthermore, the width of the wide portion 13 h in the connecting portion 13 c of the blade rubber 13 is formed to be the maximum width between the pair of holding claws 17, 17 in the holding portion 16 of the blade holder 12. That is, since the other portions of the connecting portion 13c are surely narrower than the wide portion 13h, the connecting portions 13c other than the two wide portions 13h can be attached to the blade holder 12 by inserting the holding claws 17 into the blade holder 12. It does not get caught on the inner wall of the blade holder 12 or the like, or receive more pressure than necessary. Thereby, the site | part which causes trouble at the time of the assembly | attachment of the blade holder 12 and the blade rubber 13 is reduced as much as possible, and the blade rubber 13 can be efficiently fixed with the holding part 16 of the blade holder 12.

  Further, the connecting portion 13c of the blade rubber 13 gradually increases in width from another part having a small width toward the wide part 13h, that is, the width gradually increases steplessly toward the wide part 13h, and the wide part 13h. Is formed so that the width is gradually steplessly narrowed. For this reason, the wide portion 13h can be smoothly inserted into the blade holder 12 when the blade holder 12 and the blade rubber 13 are assembled, and the assembly operation of the blade holder 12 and the blade rubber 13 can be performed more smoothly.

  As shown in FIGS. 4 and 7, the blade rubber 13 of the present embodiment has a holding portion 16 of the blade holder 12 in the head portion 13a in addition to the change in the width direction in the connecting portion 13c as described above. The thickness of the part to be held is a thick part 13i thicker than other parts. As a result, the blade rubber 13 is fixed in the width direction W (parallel to the wind glass and in the short direction) to the holding portion 16 of the blade holder 12 by the wide portion 13h in the connecting portion 13c of the blade rubber 13. The blade rubber 13 can be fixed in the thickness direction H (direction perpendicular to the window glass) by the thick portion 13i, and the blade rubber 13 can be more securely fixed by the holding portion 16 of the blade holder 12.

  The thick portion 13i of the head portion 13a of the blade rubber 13 is formed only in the vicinity where the head portion 13a contacts the holding portion 16 of the blade holder 12, and the other portions are thinner than the thick portion 13i. It has become. Therefore, when assembling the blade rubber 13 and the blade holder 12 at the time of manufacturing the wiper blade 10, when inserting the blade rubber 13 into the two holding portions 16 and 16 sequentially from the longitudinal direction of the blade holder 12, The blade rubber 13 can be inserted into the blade holder 12 with almost no resistance. Thereby, the assembly work of the blade holder 12 and the blade rubber 13 can be performed smoothly without any trouble.

  In the present embodiment, the thickness of the thick portion 13i in the head portion 13a of the blade rubber 13 is equal to or greater than the thickness of the upper and lower inner walls of the holding portion 16 of the blade holder 12 (more specifically, the thickness of the inner wall is exactly the same as the thickness of the inner wall). The same or slightly thicker thickness). Thereby, the blade rubber 13 can be reliably fixed by the inner wall of the holding portion 16 of the blade holder 12.

  Furthermore, the thickness of the thick portion 13 i in the head portion 13 a of the blade rubber 13 is formed to be the maximum thickness at the holding portion 16 of the blade holder 12. That is, since the other portions of the head portion 13a are surely thinner than the thick portion 13i, the head portions 13a other than the two thick portions 13i can be held by the holding portion during assembly and insertion into the blade holder 12. The blade holder 12 including 16 is not caught on the inner wall of the blade holder 12 or subjected to excessive pressure. Thereby, the site | part which causes trouble at the time of the assembly | attachment of the blade holder 12 and the blade rubber 13 is reduced as much as possible, and the blade rubber 13 can be efficiently fixed with the holding part 16 of the blade holder 12.

  Furthermore, the head portion 13a of the blade rubber 13 gradually increases in thickness from another portion having a small thickness toward the thick portion 13i, that is, gradually increases in thickness steplessly toward the thick portion 13i. The thick wall portion 13i is formed so as to be gradually and steplessly thin. For this reason, when the blade holder 12 and the blade rubber 13 are assembled, the thick portion 13i can also be smoothly inserted into the blade holder 12, and the assembly operation of the blade holder 12 and the blade rubber 13 can be performed more smoothly.

  Thus, in the wiper blade 10, the blade rubber 13 is firmly and securely held at the two points of the holding parts 16 and 16 provided at both ends of the blade holder 12. Accordingly, when a pressing force from the wiper arm 4 is applied to the blade holder 12 via the arm connecting portion 15, the pressing force is applied to the blade rubber 13 from both end portions of the blade holder 12, whereby the blade rubber 13 is elastically pressed. In contact with wind glass. In each holding part 16, the mounting groove 13e of the head part 13a is closed by the side wall part 12b of the blade holder 12, whereby each leaf spring member 14 mounted in the mounting groove 13e is held in the mounting groove 13e. .

  As shown in FIG. 2, resin caps 19 are attached to both tip portions of the blade rubber 13, and the tip portion of the leaf spring member 14 is covered by the cap 19 with the cap 19 covering the tip portion of the blade rubber 13. 13e is held.

  In the present embodiment, as shown in FIG. 3, fins 20 as wind receiving portions extend along the longitudinal direction of the blade holder 12 on the top wall 12 d of the blade holder 12, that is, on the surface opposite to the surface facing the window glass 2. Is provided. In addition, the front wall surface 15a of the arm connecting portion 15 disposed on the front side of the vehicle 1 has a mounting portion side wind inclined upward toward the rear wall surface 15b of the arm connecting portion 15 disposed on the rear side of the vehicle 1. A receiving portion 21 is provided along the longitudinal direction of the blade holder 12. As shown in FIGS. 2 and 4, a front wall side wind receiving portion 22 that is inclined upward toward the rear wall surface 12 f of the blade holder 12 is provided on the front wall surface 12 c of the blade holder 12 on the front side of the vehicle 1. It is provided in the longitudinal direction of the holder 12.

  When the fin 20, the mounting portion side wind receiving portion 21, and the front wall side wind receiving portion 22 receive wind, the blade rubber 13 is pressed against the wind glass by the wind force, whereby the blade rubber 13 and the wind glass are pressed. Can be improved, and the wiping property can be improved.

  Further, as shown in FIG. 3, a groove-like recess 23 through which the airflow flowing along the fin 20 can pass is formed between the fin 20 and the arm connecting portion 15 on the back side of the arm connecting portion 15. When the wiper blade 10 is swung by the wiper arm 4 when the wind glass 2 is wiped, and the longitudinal direction of the wiper blade 10 is inclined from the vehicle width direction toward the front-rear direction of the vehicle 1, the airflow flowing along the fins 20 is recessed. 23, the air flow is less likely to be disturbed due to the rearward flow of the vehicle 1 and the collision with the arm connecting portion 15, so that the lifting of the wiper blade 10 can be suppressed and the wiping performance can be improved.

  8 to 10 are perspective views showing a wiper blade according to another embodiment. 8 and 9, members that are the same as those shown in FIGS. 2 to 7 are assigned the same reference numerals, and redundant descriptions are omitted. 9 is a sectional view taken along line EE shown in FIG. 8, and FIG. 10 is a perspective view of the cover shown in FIG.

  In the wiper blade 30 shown in FIG. 8, covers 31 are attached to both ends of the blade holder 12 to improve the appearance quality of the wiper blade 10. As shown in FIGS. 9 and 10, the cover 31 is formed in a substantially U-shaped cross section having a top wall portion 31 a and a pair of side wall portions 31 b, and a cover attachment in which a part for coupling with the blade holder 12 is opened. A portion 33 is formed at one end. Holding claws (not shown) similar to the blade holder 12 are formed at both ends of the cover 31 in the longitudinal direction. Then, by engaging these holding claws with the connecting portion 13c, the cover 31 is mounted on the blade rubber 13 in a state in which the cover 31 can swing in a direction perpendicular to the window glass 2 with respect to the blade holder 12, and the blade rubber 13 It will cover the end of the.

  As shown in FIG. 9, the top wall portion 12a of the blade holder 12 is integrally provided with an engaging convex portion 12e extending toward the blade rubber 13, and the engaging convex portion 12e has a cover mounting portion. 33 opening portions are engaged. That is, the head portion 13a of the blade rubber 13 is sandwiched between the holding claw 17, the cover mounting portion 33, the top wall portion 12a, and the both side wall portions 12b, whereby the head portion 13a is held by the holding portion 16. Yes.

  The connecting portion 13c corresponding to the position of the holding claw 17 of the cover 31 is a wide portion similar to the wide portion 13h of the holding claw 17 of the holding portion 16 of the blade holder 12 in the connecting portion 13c of the above-described embodiment (illustrated). (Omitted). By doing in this way, the cover 31 and the blade rubber 13 can be firmly fixed.

  Further, the head portion 13a corresponding to the position of the holding claw 17 of the cover 31 may be a thick portion similar to the thick portion 13i of the position of the holding portion 16 of the blade holder 12 in the head portion 13a of the above-described embodiment. By doing in this way, the cover 31 and the blade rubber 13 can be further firmly fixed.

  The mounting method of the cover 31 is not limited to the structure in which the holding claw is engaged with the connecting portion 13c. For example, an engagement protrusion is provided on one end of the cover 31 on the blade holder 12 side instead of the holding claw, and the blade holder An engagement hole that opens toward the cover 31 is provided at the end of 12, and the cover 31 is rocked to the end of the blade holder 12 by engaging the engagement protrusion with the engagement projection with the rubber cover attached. You may make it mount | wear freely.

  When the blade rubber 13 comes into contact with the window glass, the outer surface of the top wall portion 31a of the cover 31 is flush with the top wall portion 12a of the blade holder 12, and the side wall portion 31b of the cover 31 corresponds to the corresponding blade. It becomes flush with the side wall 12b of the holder 12. Therefore, by attaching the cover 31 to the blade holder 12, the sense of unity of the shape from the blade holder 12 to the cover 31 is increased, and the appearance quality of the wiper blade 30 can be improved.

  A cover-side wind receiving portion 32, also referred to as a fin, is provided on the top wall surface 31 c of the cover 31 along the longitudinal direction of the cover 31. When the cover side wind receiving portion 32 receives wind, the blade rubber 13 is pressed toward the window glass. That is, in the wiper blade 30 shown in FIG. 8, the cover side wind receiving portion 32 is provided in addition to the fins 20 to 22 that press the blade rubber 13 toward the wind glass when receiving wind. Improvement of wiping property is achieved. In addition, the wiping performance is improved by providing the recess 23 that improves the escape of the airflow flowing in the longitudinal direction of the wiper blade 10 along the fin 20.

  The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the invention. For example, instead of the portion between the holding claws 17 and 17 in the connecting portion 13c of the blade rubber 13 becoming the wide portion 13h, the connecting portion 13c between the holding claws 17 and 17 is arranged in the width direction W as shown in FIG. One or a plurality of projections 13 j may be provided so as to fix the blade rubber 13 to the holding portion 16. Further, instead of the size (thickness) in the thickness direction H of the head portion 13a of the blade rubber 13 in the holding portion 16 of the blade holder 12 becoming the thick portion 13i, as shown in FIG. One or a plurality of protrusions 13k may be provided in the thickness direction H on the upper surface or the upper and lower surfaces, and the blade rubber 13 may be fixed to the holding portion 16. Furthermore, as shown in FIG. 11, both the protrusion 13j and the protrusion 13k may be provided.

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

It is explanatory drawing which shows the outline of the wiper apparatus provided with the wiper blade which is one embodiment of this invention. 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 shown in FIG. It is sectional drawing which follows the BB line shown in FIG. It is sectional drawing which follows the CC line shown in FIG. It is sectional drawing which shows the detail of the engaging part of the wide part and holding nail | claw shown in FIG. It is sectional drawing which follows the DD line | wire shown in FIG. It is a perspective view which shows the wiper blade which is other embodiment. It is sectional drawing which follows the EE line shown in FIG. FIG. 10 is a perspective view of the cover shown in FIG. 9. FIG. 4 is a cross-sectional view showing a modification of the wiper blade shown in FIG. 2. It is sectional drawing which shows the mode of the holding part of the blade holder in the conventional wiper blade. FIG. 13 is a cross-sectional view illustrating a state in which the blade rubber is inclined in the holding portion in the wiper blade illustrated in FIG. 12.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Front window glass 2a Wiping range 3 Wiper apparatus 4 Wiper arm 5 Wiper shaft 6 Link mechanism 7 Wiper motor 10 Wiper blade 12 Blade holder 12a Top wall part 12b Side wall part 12c Front wall surface 12d Top wall surface 12e Engagement convex part 12f Rear wall surface 13 Blade rubber 13a Head part 13b Lip part 13c Connection part 13d Neck part 13e Mounting groove 13f Partition part 13g Arm part 13h Wide part 13i Thick part 13j Projection 13k Projection 14 Leaf spring member 15 Arm connection part 15a Front wall surface 15b Rear wall surface 16a Holding portion 16b Holding portion 17 Holding claw 18 Holding groove 19 Cap 20 Fin 21 Mounting portion side wind receiving portion 22 Front wall side wind receiving portion 23 Recessed portion 30 Wiper blade 31 Cover 31a Top wall portion 31b Side wall portion 31c Top wall surface 31d Front wall surface 31e rear Surface 32 covers the side wind receiving portion 33 cover mounting portion

Claims (5)

A wiper blade that is attached to the tip of a wiper arm that is swingably attached to a vehicle and wipes the windshield of the vehicle,
A blade rubber comprising a head part, a lip part in contact with the window glass, and a connecting part located between the head part and the lip part;
A holding part for holding the head part at both ends in the longitudinal direction, and a blade holder connected to the wiper arm at the arm connecting part;
Each of the holding portions includes a pair of holding claws that are opposed to each other with the connecting portion interposed therebetween, and a portion of the blade rubber that is sandwiched between the holding claws of the connecting portion is a wider portion that is wider than other portions. A wiper blade characterized by   2. The wiper blade according to claim 1, wherein a width of the wide portion of the blade rubber is equal to or greater than a width between the pair of holding claws. 3.   3. The wiper blade according to claim 1, wherein a width of the wide portion of the blade rubber is a maximum width between the pair of holding claws. 4.   The wiper blade according to any one of claims 1 to 3, wherein the connecting portion of the blade rubber is formed so that the width gradually increases from another portion toward the wide portion. Wiper blades.   5. The wiper blade according to claim 1, wherein a portion of the blade rubber that is held by the holding portion of the head portion is a thick portion that is thicker than other portions. A wiper blade characterized by that.

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