JP2008254697A - Wiper blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper blade which smoothly reverses a blade rubber without causing reduction in wiping performance when turning around in an advancing/returning passage, in a flat type wiper blade. <P>SOLUTION: The wiper blade 10 is provided with: the blade rubber 11; a spring plate member 12; and a mounting means 16 for connecting the wiper arm 20 to this, and is reciprocated/moved on a wiring surface S of the vehicle by pivoting of the wiper arm 20. The mounting means 16 has: a pivoting base part 57 for retaining a pivot shaft 51 mounted to the spring plate member 12 and arranged in parallel to a lengthy direction at the inside; a pivoting support part 52 mounted to the pivot shaft 51 at an inner side of the pivoting base part and pivotably supporting the pivoting base part 57 around the pivot shaft 51; a connection body part 18 detachably connected with the wiper arm 20; and a connection base part 17 fixed to the pivoting support part 52, connecting the connection body part 18 through a connection shaft 61 and turnably supporting the connection body part 18 around the connection shaft 61. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In the present invention, a long-shaped spring plate member curved in a bow shape is assigned to a blade rubber, and the spring plate member is provided in a vehicle via an attachment means provided at a substantially central portion in the longitudinal direction of the spring plate member. The present invention relates to a wiper blade connected to a wiper arm.

  Conventionally, for example, to wipe a wiping surface such as a windshield of a vehicle, it is widely known to use a wiper having a wiper blade that slides on the wiping surface. As such a wiper, for example, a long-shaped spring plate member curved in a bow is applied to a long-shaped blade rubber for wiping the wiping surface, and the blade rubber is bent, and the spring plate member has its long length. It is pivotally supported by four yokes along the scale direction, each yoke is pivotally supported at both ends of the two secondary levers, and these two secondary levers are pivotally supported at both ends of the primary lever. It is known that a wiper blade (hereinafter referred to as a tournament type wiper blade) configured to be provided with attachment means is connected to a wiper arm provided on a vehicle via the attachment means.

  This tournament-type wiper blade is designed so that each connection point is parallel to the wiping surface and can be rotated around a direction perpendicular to the longitudinal direction, and the pressing force from the wiper arm is changed from the primary lever to the two secondary levers. Then, the blade rubber is abutted against the wiping surface with a uniform pressing force over the entire length by being transmitted to the spring plate member while being dispersed stepwise through the four yokes, and the blade as the wiper arm swings. A rubber wipes the wiping surface well by sliding on the wiping surface at an appropriate inclination angle.

  However, in a tournament-type wiper blade, when snow and ice adhere to the spring plate member to which the blade rubber is attached from the attachment means that becomes the attachment location to the wiper arm, and each connection location does not operate (turn), There is a possibility that the blade rubber cannot be properly brought into contact with the wiping surface and the wiping surface cannot be properly wiped.

  For this reason, the long-shaped blade rubber is directed to the long-shaped spring plate member curved in a bow shape so that the blade rubber is bent, and the vehicle is connected to the vehicle via the attachment means provided at the substantially central portion of the spring-plate member. A wiper blade (hereinafter referred to as a flat wiper blade) that is connected to a wiper arm provided on the door is considered (for example, see Patent Document 1). In the flat wiper blade, the pressing force from the wiper arm is evenly distributed in the longitudinal direction by the spring plate member, so that the blade rubber abuts against the wiping surface with a uniform pressing force over its entire length. As the arm swings, the blade rubber slides on the wiping surface at an appropriate inclination angle, thereby wiping the wiping surface well.

  By the way, since wiper blades are generally reciprocated on the windshield, the blade rubber to which the pressing force is applied to the wiping surface is at an appropriate inclination angle with respect to the wiping surface in the opposite direction between the forward path and the return path. Therefore, when moving from the forward path to the return path or from the return path to the forward path, the inclination direction of the blade rubber is reversed (hereinafter referred to as reversal). In the flat wiper blade described above, the blade rubber is inverted when the round-trip path is turned back, depending largely on the deformation of the blade rubber. This is because there is no place where play is set in order to enable the operation from the attachment means to the wiper arm to the spring plate member to which the blade rubber is attached.

  On the other hand, in the tournament-type wiper blade described above, the distance between the attachment means, which is the attachment position to the wiper arm, and the spring plate member to which the blade rubber is attached is connected by a pivot that can be rotated between a plurality of levels. (In the example described above, between the primary lever and each secondary lever, between each secondary lever and each yoke, between each yoke and the spring plate member) Since play is provided to enable movement, when the round-trip path is turned back by swinging around the longitudinal direction due to the accumulated play of the connection place at each level position and bending deformation of the blade rubber The blade rubber is inverted.

  Therefore, in the flat type wiper blade, the blade rubber is softer than the tournament type wiper blade in order to smoothly invert the blade rubber when turning back and forth. However, the softness (deflection) of the blade rubber greatly affects the inclination angle when sliding on the wiping surface, so smooth reversal of the blade rubber can be achieved without reducing the wiping performance. It is difficult to set the softness to be possible.

In view of this, it is conceivable that a flat wiper blade may be configured to be capable of swinging around the longitudinal direction corresponding to the cumulative amount of play at each connection point. As a similar technology, in a tournament-type wiper blade, the primary lever and the attachment means are pivotably connected via a shaft member extending in the longitudinal direction of the blade rubber, thereby reducing blade rubber deterioration. It has been considered to prevent the smooth inversion due to the cause (see, for example, Patent Document 2).
JP 2003-146190 A Japanese Patent Laid-Open No. 2002-12130

  However, in the tournament-type wiper blade disclosed in Patent Document 2, the blade rubber is smoothed by swinging around the longitudinal direction caused by the play that is originally provided to enable rotation at each connection point. Since the amount of play at each connection point may change due to long-term use, the blade rubber should be kept at an appropriate angle of inclination with respect to the wiping surface. Is difficult, and the problem of adhesion of ice and snow remains. From these things, there exists a possibility that wiping performance may reduce with long-term use or a use condition.

  The present invention has been made in view of the above-described problems, and in a wiper blade of a flat type, a wiper blade capable of smoothly reversing the blade rubber when the reciprocating path is folded without causing a reduction in wiping performance. It is an issue to provide.

  In order to solve the above-mentioned problem, the wiper blade according to claim 1 has a long shape, and a wiping portion is provided at the upper portion and the wiping portion at the upper portion when viewed in a cross section orthogonal to the longitudinal direction. A blade rubber to be wiped, and a spring plate member that has a long shape that fits the head portion of the blade rubber, is concave and curved in the long direction when viewed from the blade rubber side, and is provided along the head portion; An attachment means for holding the spring plate member at a substantially central portion of the spring plate member and capable of being connected to a wiper arm provided in the vehicle, and the blade rubber and the spring plate by swinging the wiper arm. A wiper blade reciprocally moved on the wiping surface in a direction intersecting with the longitudinal direction of the member, wherein the attachment means includes a swing mechanism fixed to a substantially central portion of the spring plate member, and the swing mechanism Mechanism And a connecting mechanism for connecting the swing mechanism to the wiper arm. The swing mechanism is attached to the spring plate member and extends in the longitudinal direction of the blade rubber and the spring plate member. A swing base that holds a swing shaft arranged in parallel inside, and a swing that is attached to the swing shaft inside the swing base and supports the swing base so as to be swingable around the swing shaft. A moving support portion, and the connecting mechanism is connected to the connecting body portion to which the wiper arm is detachably connected, and is connected to the swing supporting portion, and connects the connecting body portion via a connecting shaft. And a connecting base portion that rotatably supports the connecting body portion around the connecting shaft.

  According to the above-described configuration, the swinging base attached to the spring plate member is elongated in the longitudinal direction by the swinging support portion fixed to the connecting base to which the connecting main body connected to the wiper arm is attached. The blade rubber that reciprocates on the wiping surface by the swing of the wiper arm is rotated in the longitudinal direction perpendicular to the swing direction with respect to the wiper arm. Therefore, the reversal of the blade rubber when the reciprocating path is turned back can be made smooth by the swinging of the attachment means around the longitudinal direction and the bending deformation of the blade rubber.

  Moreover, since it is a structure of a flat type wiper blade, it can prevent that it becomes impossible to wipe a wiping surface appropriately due to adhesion of ice and snow.

  Further, the attachment means is designed to swing around the longitudinal direction, and the swinging around the longitudinal direction and the bending deformation of the blade rubber facilitate smooth reversal of the blade rubber when the reciprocating path is folded back. Because of this configuration, it is easy to set the angle when swinging, and it is easy to cope with long-term use, preventing wiping performance from being reduced due to long-term use or usage conditions. can do.

  In the mounting means, the swinging shaft is held inside the swinging base and the swinging support is attached to the swinging shaft inside the swinging base. It is possible to suppress the attachment of ice and snow, and it is possible to suppress the rocking of the rocking mechanism relative to the coupling mechanism from being hindered due to the attachment of ice and snow.

  The wiper blade according to claim 2 is the wiper blade according to claim 1, wherein the swing base portion is connected to one end of the swing support portion attached to the swing shaft and the connection base portion. A support part insertion hole that allows insertion of an extended portion between the fixed other end, and the swing support part is positioned in the swing direction of the inner wall surface defining the support part insertion hole; A swinging range around the swinging shaft is limited to a predetermined angle by contacting the extended portion with a pair of opposing wall surfaces.

  According to the configuration described above, the swing range of the swing mechanism relative to the coupling mechanism can be set to a predetermined value by appropriately setting the support portion insertion hole and the swing support portion.

  In addition, ice and snow are effectively prevented from adhering between the opposing wall surfaces of the support portion insertion holes that contact each other to limit the swing range of the swing mechanism relative to the coupling mechanism and the extending portion of the swing support portion. can do. For this reason, for example, even in a scene where it is snowing, it is possible to prevent the swing range of the swing mechanism from changing due to the adhesion of ice and snow, and the return of the reciprocating path can be reduced. In this case, the blade rubber can be smoothly reversed.

  The wiper blade according to claim 3 is the wiper blade according to claim 2, wherein the swinging base portion and the swinging support portion include the opposing wall surfaces of the support portion insertion hole and the swinging support portion. The distance between the extending portion and the extending portion is set so as to increase at a constant rate from the swing shaft side toward the connecting base portion side so that the extending portion comes into surface contact with the opposite wall surfaces. It is characterized by.

  According to the configuration described above, since the swing support part can be brought into surface contact with the opposite wall surfaces of the support part insertion hole, a force is applied to the swing base part and the swing support part that define the support part insertion hole. Can be prevented, and the reliability of the rocking function around the rocking shaft in the mounting means for a long time use or usage situation can be improved, and the wiping performance can be prevented from being reduced. Can do.

  The wiper blade according to claim 4 is the wiper blade according to claim 2 or 3, wherein the swing base is closed so as to be able to rotatably accommodate the swing shaft and the support portion is inserted. It has a rocking bearing insertion space communicating with the hole.

  According to the configuration described above, it is possible to prevent ice and snow from entering the rocking bearing insertion space, and the relative rotation between the rocking shaft and the rocking base is hindered due to adhesion of ice and snow. Can be effectively suppressed.

  The wiper blade according to claim 5 is the wiper blade according to any one of claims 2 to 4, wherein the swing base portion is a spring plate attachment portion attached to the spring plate member; A fixed piece portion provided with a support portion receiving recess that allows the swing support portion to be received, and the support portion receiving recess is configured such that the fixed piece portion has an open end of the support portion receiving recess. The support piece insertion hole is defined in cooperation with the spring plate mounting portion by fixing the fixing piece portion to the spring plate mounting portion so as to be closed by the spring plate mounting portion. .

  According to the above configuration, the swing shaft and the swing support portion can be easily attached to the swing base portion.

  According to the wiper blade of the present invention, in a flat wiper blade, the blade rubber can be smoothly reversed when the reciprocating path is folded without reducing the wiping performance.

  Embodiments of a wiper blade according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view schematically showing a state in which the wiper blade 10 according to the present embodiment is applied to the vehicle C, FIG. 2 is a perspective view schematically showing the wiper blade 10, and FIG. FIG. 2 is a schematic perspective view showing the wiper blade 10 expanded on each component.

  As shown in FIG. 1, the wiper blade 10 is provided on the vehicle C in order to wipe the wiping surface S (a windshield in the present embodiment) made of the windshield or rear glass of the vehicle C. As shown in FIGS. 2 and 3, the wiper blade 10 includes a blade rubber 11, a vertibra 12, six holders 13, a blade body 14, and two stoppers 15. Attached to C.

  The wiper blade 10 is fixed to a wiper arm 20 provided in the vehicle C as shown in FIG. Although not shown, the wiper arm 20 is connected to a wiper motor via a wiper link, and is capable of reciprocating along the wiping surface S by driving the wiper motor (see arrows G and B). In this embodiment, the wiper arm 20 is provided with a rocking shaft for reciprocating movement located near the base end near the lower side of the glass mounting opening constituting the wiping surface S, although not shown. When not driven, the stationary posture Ia is substantially along the lower side. The wiper blade 10 is mounted on the wiper arm 20 so that when the wiper arm 20 is swung, the direction intersecting the longitudinal direction of the wiper blade 10 (hereinafter referred to as the longitudinal direction) is the traveling direction. . In this embodiment, the wiper blade 10 is configured such that the wiper arm 20 is driven to swing the forward path G from the stationary posture Ia along the wiping surface S to the upper and rear sides of the vehicle C, and the end of the forward path G. The wiping surface S is reciprocated along the wiping surface S along the return path B swinging forward and downward of the vehicle C. In the wiper blade 10, the blade rubber 11 is slid so as to reciprocate on the wiping surface S as the wiper arm 20 is driven.

  The blade rubber 11 is formed of an elastic member that can slide on the wiping surface S without damaging the wiping surface S, and has a long shape. FIG. 4 is a cross-sectional view taken along the line II in FIG. As shown in FIG. 4, the blade rubber 11 includes a wiping portion 11a that is in contact with the wiping surface S, a head portion 11b that is located above the wiping portion 11a, and a neck portion 11c that connects the wiping portion 11a and the head portion 11b. And an arm portion 11d protruding from the neck portion 11c. The cross-sectional shape of the wiping portion 11a has a substantially inverted triangular shape, and the cross-sectional shape of the head portion 11b has a rectangular shape. The neck part 11c forms a recessed part between the wiping part 11a and the head part 11b. The arm portion 11d protrudes obliquely upward from the neck portion 11c, and can come into contact with the lower wall surface 14a of the blade body 14 by tilting the neck portion 11c (see FIGS. 12 and 13). The wiping portion 11a is in contact with the wiping surface S at the lower wiping location 11e, and the wiping location 11e is slid on the wiping surface S (see FIGS. 1 and 4). The blade rubber 11 has a so-called neck inversion structure having the above-described shape. In this blade rubber 11, when the transition from the forward path G to the backward path B or from the backward path B to the forward path G is performed by using flexural deformation (mainly neck reversal that flexibly deforms the neck portion 11c) (that is, sliding to the wiping surface S). When the moving direction is changed to the opposite side), the inclination direction with respect to the wiping surface S is reversed (hereinafter referred to as reversal (see FIGS. 12 and 13)), and pressed against the wiping surface S by receiving an urging force. The neck portion 11c is curved when reversed in a state where the wiping portion 11a is turned, and the wiping portion 11a has an appropriate tilt angle with respect to the wiping surface S. It is said. At this time, the arm portion 11d is in contact with the lower wall surface 14a of the blade body 14, thereby assisting the wiping portion 11a to have an appropriate tilt angle by the curvature of the neck portion 11c (see FIGS. 12 and 13). A vertebra 12 is provided on the head 11 b of the blade rubber 11.

  As shown in FIG. 3, the vertebra 12 is formed in a long plate shape from a resin material or metal material having elasticity, and has a shape curved in a bow shape with respect to the long direction. When the central part 12a of the vertebra 12 that is curved like a bow is pushed down and flattened, the vertebra 12 serves to distribute this force and equalize it when viewed in the longitudinal direction of the vertebra 12. For this reason, in this embodiment, the vertebra 12 functions as a spring plate member that is curved in the longitudinal direction so as to disperse the force when the center portion is pushed down and flattened. In the wiper blade 10, the vertebra 12 is disposed so that the wiping surface S (see FIGS. 3 and 4) is positioned in a direction to be pushed down during use. A holder 13 is attached to the vertebra 12 for attaching the blade rubber 11. FIG. 5 is a perspective view schematically showing the holder 13.

  As shown in FIG. 5, the holder 13 is processed so that both side portions of the rectangular plate are folded and folded into an L shape in two stages, and has a reverse convex shape when viewed in cross section. A cutout 21 is formed in the lower wall portion 13 a of the holder 13. The notch 21 extends along the extending direction of the vertebra 12 while maintaining a constant interval.

  A first space 22 located above the holder 13 and a second space 23 located below the first space 22 are defined inside the holder 13. The first space 22 has a rectangular parallelepiped shape as a whole, and has a width dimension w and a height dimension h that can secure a horizontal width dimension and a height dimension necessary for inserting the vertical bra 12, and allows the vertical rib 12 to be received. (See FIG. 4). The second space 23 has a rectangular parallelepiped shape that is narrower than the first space 22, and the width and height dimensions necessary for inserting the head 11 b (see FIG. 4) of the blade rubber 11 are secured. ing. The second space 23 is structured such that both ends of the peripheral portion of the notch 21 of the holder 13 sandwich the neck portion 11c of the blade rubber 11 when the head portion 11b is inserted, and the blade rubber 11 does not fall out of the holder 13. It has a structure (see FIG. 4). For this reason, the holder 13 holds the blade rubber 11 on the attached vertebra 12 so that the blade rubber 11 can be attached to the vertebra 12, and the length dimension l of the holder 13 is determined by the blade rubber to the vertebra 12. 11 is set to a size that can provide sufficient attachment strength.

  Since the holder 13 can attach the blade rubber 11 to the vertebra 12 so that the wiping portion 11e of the blade rubber 11 contacts the wiping surface S over the entire length with equal pressure, the length of the vertebra 12 can be reduced. Accordingly, the attachment position and the number are appropriately set. In this embodiment, as shown in FIG. 3, six holders 13 having the same shape and the same size are used, and each holder 13 is spaced at an appropriate interval along the extending direction of the vertebra 12. It is arrange | positioned equally at right and left centering on the center part 12a with which the clip base 17 mentioned later is mounted | worn with it arrange | positioned at the vertebra 12. A blade body 14 is attached to the vertical bra 12.

  As shown in FIG. 3, the blade body 14 has a long shape slightly longer than the vertebra 12, and is formed from an elastic material such as rubber using a mold (not shown). A fitting groove 24 is formed in the blade body 14 (see FIG. 4). As shown in FIG. 4, the fitting groove 24 extends in the longitudinal direction of the blade body 14 while exhibiting an inverted convex shape capable of sandwiching both side edges of the vertebra 12, and has a groove opening 24 a. The lower wall surface 14a of the blade body 14 is opened. The fitting groove 24 has a horizontal width and a height necessary for inserting the vertical bra 12 when viewed in a cross section orthogonal to the extending direction of the blade body 14, so that the vertical bra 12 can be fitted. ing. The fitting groove 24 opens the upper surface of the blade body 14 through an attachment opening 24 b provided in the center of the blade body 14. The fitting groove 24 of the blade body 14 accommodates the vertebra 12 in a state where the head 11b of the blade rubber 11 is held via the holder 13 with the wiping portion 11e of the blade rubber 11 exposed from the groove opening 24a. Can do. A stopper 15 (see FIG. 3) is attached to each end portion 14b of the blade body 14 in the accommodated state.

  As shown in FIG. 3, each stopper 15 has a cylindrical receiving portion 15a and a lid portion 15b that closes one end thereof. The stoppers 15 are mounted so that the end portions 14b of the blade body 14 are received by the receiving portions 15a, and the lid portions 15b are the end portions 14b of the vertebra 12 and the open ends (14c) of the fitting groove portions 24 of the blade body 14. Shield. Thereby, each stopper 15 can prevent the blade rubber 11 from falling off from each end face 14c of the blade body 14 to the outside, and can improve the design of the appearance of each end face 14c of the blade body 14 (FIG. 2). reference). In a state where the vertebra 12 is stored in the blade body 14, the central portion 12a of the vertebra 12 is exposed from the attachment opening 24b, and the attachment means 16 is attached to the central portion 12a.

  In the wiper blade 10 according to the present invention, the attachment means 16 prompts the blade rubber 11 to be reversed so that the blade rubber 11 is smoothly reversed when moving from the forward route G to the backward route B or from the backward route B to the forward route G. It is configured to operate. This will be described below. FIG. 6 is a perspective view schematically showing the attachment means 16 in the wiper blade 10, and FIG. 7 is a schematic perspective view showing the attachment means 16 expanded in each component. FIG. 8 is a schematic perspective view showing a second fixed piece 34 and a support member 35, which will be described later, in an expanded state. FIG. 9 shows the second fixed piece 34 and the second fixed piece 34 in a state where the attachment means 16 is assembled. FIG. 10 is a perspective view schematically showing the positional relationship of the support member 35, and FIG. 10 is a schematic explanatory view showing the sectional view obtained along the line II-II in FIG. It is. Further, FIG. 11 is a cross-sectional view obtained along the line III-III in FIG.

  As shown in FIGS. 6 to 11, the attachment means 16 includes a swing mechanism 30 and a connection mechanism 60. The swing mechanism 30 is an attachment point to the vertebra 12 and can swing the blade rubber 11 along the plane perpendicular to the swing direction with respect to the wiper arm 20 (swing in the longitudinal direction). The connecting mechanism 60 is configured so that the blade rubber 11 can swing with respect to the wiper arm 20 along a plane that includes the longitudinal direction of the blade rubber 11 and that is perpendicular to the wiping surface S. Are connected to each other.

  As shown in FIG. 7, the swing mechanism 30 includes a first spring plate mounting member 31, a second spring plate mounting member 32, a first fixing piece 33, a second fixing piece 34, a support member 35, And two fastening members 36.

  The first spring plate mounting member 31 is formed by bending a single plate member having a predetermined shape, and includes a first holding portion 37, a first holding wall portion 38, and a first opposing wall portion 39. And have.

  The first clamping portion 37 has a U-shape that can receive the side edge of the vertebra 12 (see FIGS. 7 and 11), and is provided at both ends of the first holding wall portion 38 as viewed in the longitudinal direction. Yes.

  The first holding wall portion 38 is a plate-like shape extending from the upper end portion of the U-shape in the first sandwiching portion 37 (in a state where the attachment means 16 is assembled, perpendicular to the longitudinal direction and parallel to the wiping surface S). The first sandwiching portion 37 forms a wall surface that comes into contact with the vertical bar 12 from above in a state in which the side edge of the vertical bar 12 is received. Assuming that the side of the first holding wall portion 38 that is continuous with the first sandwiching portion 37 when viewed in the width direction is the outer end, the first opposing wall portion 39 is continuous with the inner end of the first holding wall portion 38.

  The first opposing wall portion 39 is a side on which the first clamping portion 37 is provided when viewed in a direction orthogonal to the longitudinal direction and the width direction (a direction orthogonal to the wiping surface S in a state where the attachment means 16 is assembled). It is formed by being bent at a substantially right angle on the opposite side. The first opposing wall portion 39 is provided with first insertion holes 40 in the vicinity of both ends as viewed in the longitudinal direction. A second spring plate mounting member 32 is arranged in parallel with the first spring plate mounting member 31 in the width direction.

  The second spring plate mounting member 32 is formed by bending a single plate member having a predetermined shape, and includes a second holding portion 41, a second holding wall portion 42, and a second opposing wall portion 43. And have.

  The second clamping portion 41 has a U-shape that can receive the side edge of the vertebra 12 (see FIGS. 7 and 11) and is long to fit the first clamping portion 37 of the first spring plate mounting member 31. It is provided at both ends of the second holding wall portion 42 as viewed in the scale direction.

  The second holding wall portion 42 has a plate shape (extends in the width direction when the mounting means 16 is assembled) extending from the upper end portion of the U-shape of the second sandwiching portion 41, and is second. 2 In the state where the sandwiching portion 41 receives the side edge of the vertebra 12, a wall surface that comes into contact with the vertebra 12 from above is formed. In the present embodiment, the second holding wall portion 42 is set to have a greater length dimension in the width direction than the first holding wall portion 38 of the first spring plate mounting member 31. Assuming that the side of the second holding wall portion 42 that is continuous with the second clamping portion 41 when viewed in the width direction is the outer end, the second opposing wall portion 43 is continuous with the inner end of the second holding wall portion 42.

  The second opposing wall portion 43 is a side on which the second clamping portion 41 is provided when viewed in a direction orthogonal to the longitudinal direction and the width direction (a direction orthogonal to the wiping surface S in a state where the attachment means 16 is assembled). It is formed by being bent at a substantially right angle on the opposite side. The second opposing wall portion 43 is provided with second insertion holes 44 in the vicinity of both ends viewed in the longitudinal direction.

  When the first spring plate mounting member 31 and the second spring plate mounting member 32 face each other with both side edges of the vertebra 12 being inserted into both the first clamping portion 37 and both the second clamping portions 41, The first opposing wall portion 39 and the second opposing wall portion 43 are set to contact each other, and the vertebra 12 can be held in this contact state. A first fixing piece 33 is arranged on the first spring plate mounting member 31, and a second fixing piece 34 is arranged on the second spring plate mounting member 32.

  The first fixing piece 33 has a substantially rectangular parallelepiped shape having a size that fits the first spring plate mounting member 31. When the first fixing piece 33 is disposed on the first spring plate mounting member 31, the first holding wall portion 38 and the first fixing wall portion 38. The surface abuts against the opposing wall portion 39 (see FIGS. 6 and 10). In the state where the first fixing piece 33 is disposed on the first spring plate mounting member 31, a screw is provided at a position that fits each first insertion hole 40 of the first opposing wall portion 39 of the first spring plate mounting member 31. A fastening screw hole 45 in which a groove is formed is provided.

  The second fixing piece 34 has a substantially rectangular parallelepiped shape having a size that fits the second spring plate mounting member 32. When the second fixing piece 34 is arranged on the second spring plate mounting member 32, the second holding wall portion 42 and the second holding wall portion 42. The surface abuts against the opposing wall portion 43 (see FIGS. 6 and 10). In the state where the second fixed piece 34 is disposed on the second spring plate mounting member 32, a screw is provided at a position that fits each second insertion hole 44 of the second opposing wall portion 43 of the second spring plate mounting member 32. A receiving hole 46 is provided. Here, in the state where the second fixing piece 34 is disposed on the second spring plate mounting member 32, the side of the second fixing piece 34 that comes into surface contact with the second opposing wall portion 43 is fixed as shown in FIG. The inner side surface 34a, the side located on the opposite side in the width direction is defined as a fixed outer surface 34b, and the side in contact with the second holding wall portion 42 is defined as a fixed bottom surface 34c.

  As shown in FIG. 8, in the screw receiving hole 46, one end 46a opens the fixed inner side surface 34a, the other end 46b opens the fixed outer side surface 34b, and the other end 46b communicates with the small diameter portion 46c communicating with the one end 46a. A large-diameter portion 46d having an inner diameter larger than that of the small-diameter portion 46c is continuous, and a step portion 46e is formed due to a difference in diameter. A fastening member 36 (see FIG. 7) is inserted into each screw receiving hole 46.

  As shown in FIG. 7, both the fastening members 36 can be accommodated in a screw portion 36 a through which a small diameter portion 46 c (see FIG. 8) of the screw receiving hole 46 can be inserted, and in a large diameter portion 46 d of the screw receiving hole 46. The head portion 36b that can be engaged with the stepped portion 46e is continuous. The screw portions 36a of the both fastening members 36 include a small diameter portion 46c (see FIG. 8) of the screw receiving hole 46 of the second fixing piece 34, the second insertion hole 44 of the second spring plate mounting member 32, and the first spring plate mounting member. The length dimension is such that it can be screwed into the fastening screw hole 45 of the first fixing piece 33 through the first insertion hole 40 of 31.

  Further, as shown in FIG. 8, the second fixing piece 34 is provided with a rocking bearing receiving recess 47 and a support receiving recess 48.

  The rocking bearing insertion recess 47 has a rectangular shape whose cross section viewed in the width direction opens to the fixed inner side surface 34a and the fixed bottom surface 34c (see FIG. 10), and extends along the longitudinal direction. It is long in the direction of the scale. This swing bearing recess 47 is set to a size that allows a swing shaft 51 (described later) to be rotatably received. A support receiving recess 48 is provided so as to communicate with the central portion of the swing bearing recess 47.

  The support receiving recess 48 has a length smaller than that of the swing bearing recess 47 when viewed in the longitudinal direction and extends along the width direction, and the cross section viewed in the longitudinal direction has a swing bearing. It has a rectangular shape that opens into the recess 47, the fixed bottom surface 34c, and the fixed outer surface 34b (see FIG. 10). For this reason, when viewed from below, the second fixing piece 34 is formed with a T-shaped recess by the rocking bearing receiving recess 47 and the support receiving recess 48. In the present embodiment, the ceiling surfaces 47a and 48a (surfaces located above the inner wall surface in the state where the attachment means 16 is assembled) in the rocking bearing receiving recess 47 and the support receiving recess 48 are continuous with each other. However, when viewed in the width direction, the flat surface is inclined so as to widen the distance from the fixed bottom surface 34c from the fixed inner surface 34a toward the fixed outer surface 34b (see FIG. 10).

  For this reason, when the second fixing piece 34 is arranged on the second spring plate mounting member 32, the second holding wall portion 42 and the support receiving recess 48 cooperate with each other as shown in FIG. A support portion insertion hole 49 extending in the width direction in the fixing piece 34 is defined, and the second holding wall portion 42 and the second opposing wall portion 43 cooperate with the rocking bearing insertion recess 47. Thus, a rocking bearing insertion space 50 that extends along the longitudinal direction in the second fixed piece 34 and communicates with the support portion insertion hole 49 is defined. In other words, the rocking bearing insertion space 50 that is long and closed in the long direction is formed in the rocking mechanism 30, and communicates with the central portion of the rocking mechanism 30 and extends along the width direction while the second fixing piece. Thus, a support portion insertion hole 49 that opens to the fixed outer surface 34b of 34 is formed. The support member 35 is accommodated in the rocking bearing insertion space 50 and the support portion insertion hole 49.

  As shown in FIG. 8, the support member 35 includes a swing shaft 51 and a swing support portion 52.

  The oscillating shaft 51 has a substantially cylindrical shape, and is sized so as to be rotatable about the axis within the oscillating bearing insertion space 50 and accommodated so as not to be displaced. A swing support portion 52 is continuous with the central portion of the swing shaft 51.

  The swing support portion 52 includes a support arm portion 53 extending in a direction orthogonal to the extending direction of the swing shaft 51 and a direction orthogonal to the extending direction (extension of the swing shaft 51). And a fixed portion 54 extending in parallel with the direction.

  The support arm portion 53 has one end 53a continuous to the swing shaft 51 and the other end 53b continuous to the fixed portion 54, and has a rectangular cross section perpendicular to the extending direction. The support arm portion 53 has a size that can be accommodated in the support portion receiving recess 48 (support portion insertion hole 49), and has a length that is larger than the length of the support portion receiving recess 48. . As shown in FIG. 10, the support arm portion 53 is a tangent to a circle whose upper side (53 c) and lower side (53 d) at one end 53 a is the outer shape of the swing shaft 51 when viewed in a cross section orthogonal to the swing shaft 51. The distance between the upper side (53c) and the lower side (53d) becomes smaller toward the other end 53b, and is set to be parallel to each other in the vicinity of the other end 53b. In the present embodiment, the inclination for changing the distance between the two is equal to the inclination of the ceiling surfaces 47 a and 48 a in the rocking bearing receiving recess 47 and the support receiving recess 48 with respect to the fixing bottom surface 34 c in the second fixing piece 34. Is set. The fixed portion 54 is continuous with the other end 53b.

  The fixed portion 54 has a rectangular parallelepiped shape that forms an outer surface 54a orthogonal to the extending direction of the support arm portion 53 (upper surface 53c), and both extend from the support arm portion 53 to substantially equal positions when viewed in the extending direction. The end face 54b is located. The fixed portion 54 has a length dimension suitable for an opposing wall portion 17a of the clip base 17 described later when viewed in the longitudinal direction. The fixed portion 54 is provided with a recess 55 for retraction with a circular shape when viewed from the front at the approximate center of the outer surface 54a, and a fixing screw hole 56 with a thread groove formed at the approximate center of both the extended end surfaces 54b. ing.

  The support member 35 has an H shape as a whole when viewed from below (upper), the swing shaft 51 is accommodated in the swing bearing insertion recess 47, and the support arm portion 53 is the support receiving recess 48. 9 (see arrow A6 in FIG. 8), as shown in FIGS. 9 and 10, the fixing portion 54 extends along the fixing outer surface 34b outside the second fixing piece 34. The clip 18 and the clip base 17 for attaching it, that is, the coupling mechanism 60 are attached to the fixed portion 54 (see FIG. 7).

  The clip 18 is made of synthetic resin, and as shown in FIG. 7, the front end portion 20a (see FIG. 1) of the wiper arm 20 provided in the vehicle C can be fixed and released, and the connection main body portion. It functions as. The clip 18 is provided with a holding notch 18a in which the rivet 61 can be rotatably held and into which the rivet 61 can be fitted. The clip 18 is held by a clip base 17 as a connection base.

  The clip base 17 is formed by bending a single plate member having a predetermined shape, and a pair of opposed wall portions 17a and 17b facing each other with the clip 18 interposed at both side edges of the clip 18, A bottom wall portion 17c that connects the opposing wall portions 17a and 17b. An operation notch 17f for facilitating the operation of the clip 18 is formed in the bottom wall portion 17c. The opposing wall portion 17a is provided with a rivet insertion hole 17d, and the opposing wall portion 17b is provided with a rivet insertion hole 17e facing each other. In the present embodiment, the rivet insertion hole 17d has a diameter that allows a small-diameter portion 61c of the rivet 61 to be described later to be inserted, and the rivet insertion hole 17e has a large-diameter portion 61a of the rivet 61 that will be described later. The diameter is set to a size that can be inserted. The rivet 61 is inserted into the rivet insertion hole 17d and the rivet insertion hole 17e.

  The rivet 61 is configured such that a flange portion 61b is provided at one end of a large-diameter portion 61a that has a cylindrical shape as a whole, and the other end is a small-diameter portion 61c. Thus, a step portion 61d is formed. In the rivet 61, the large diameter portion 61 a has a length dimension obtained by adding the thickness dimension of the other opposing wall portion 17 b to the interval between the pair of opposing wall portions 17 a and 17 b of the clip base 17. In the rivet 61, from the outside of the clip base 17, the large-diameter portion 61a is inserted into the rivet insertion hole 17e, the small-diameter portion 61b is inserted into the rivet insertion hole 17d, and the flange portion 61b is the outer surface of the opposing wall portion 17b. And the step portion 61d is engaged with the inner side surface of the opposing wall portion 17a, and in this state, a portion of the small diameter portion 61c inserted through the rivet insertion hole 17d protrudes from the outer surface of the opposing wall portion 17a. Is crushed (see reference numeral 61e in FIG. 11), and the opposing wall portion 17a is sandwiched between the crushed portion 61e and the stepped portion 61d (see FIG. 11), and fixed to the clip base 17 in a state in which rotation is prevented. Is done. When the clip 18 is fitted into the rivet 61 from the holding notch 18 a, the clip 18 is attached to the clip base 17 so as to be swingable around the rivet 61. A holding arm portion 62 is provided on the opposing wall portion 17 a of the clip base 17.

  The holding arm portion 62 is set so as to come into contact with both extending end surfaces 54b of the fixed portion 54 of the support member 35 from the outside, and is a plate-like portion protruding from both ends of the opposing wall portion 17a as viewed in the longitudinal direction. Is bent outward in the width direction, and a fixing screw insertion hole 62a located on the same axis along the longitudinal direction is formed. The fixing screw member 63 is inserted into each of the fixing screw insertion holes 62a.

  The fixing screw member 63 has a screw portion 63a and a head portion 63b. The support member 35 is in a state where the screw portion 63a is inserted through the fixing screw insertion hole 62a and the head portion 63b is engaged with the holding arm portion 62. The fixing portion 54 can be screwed into the fixing screw hole 56.

  The attachment means 16 is attached as follows.

  First, as shown in FIG. 7, the rivet 61 is inserted into the rivet insertion hole 17e and the rivet insertion hole 17d of the clip base 17 (see arrow A1), and the portion protruding from the outer surface of the opposing wall portion 17a is pushed. The rivet 61 is fixed to the clip base 17 by crushing (see reference numeral 61e in FIG. 11).

  The holding wall portions 62 of the clip base 17 and the opposite wall portions 17 a of the clip base 17 and the fixed portions 54 of the support member 35 are arranged so that the both end portions 62 b of the support member 35 come into contact with both extended end surfaces 54 b from the outside. The side surface 54a is brought into contact (see arrow A2). At this time, the crushing portion 61e of the rivet 61 protruding from the opposing wall portion 17a of the clip base 17 is accommodated in the retracting recess 55 formed in the outer surface 54a of the fixed portion 54 (see FIG. 11). The base 17 and the support member 35 can be appropriately disposed. In this state, the fixing screw member 63 is inserted into the fixing screw insertion hole 62 a of each holding arm portion 62, and screwed into the fixing screw holes 56 formed in the both extended end surfaces 54 b of the fixing portion 54 of the support member 35. (See arrow A3). Thereby, the support member 35 is fixed to the clip base 17 to which the rivet 61 is fixed.

  Next, in a state in which the blade body 14 is inserted into the vertebra 12 holding the blade rubber 11 via the six holders 13, the central portion 12a of the vertebra 12 exposed from the mounting opening 24b of the blade body 14 (see FIG. 3). ) Is inserted into each first sandwiching portion 37 of the first spring plate mounting member 31 so that one side edge of the vertibra 12 is inserted into each second sandwiching portion 41 of the second spring plate mounting member 32. 12 and insert the other side edge of the first opposing wall portion 39 and the second opposing wall portion 43 so that the first insertion holes 40 and the second insertion holes 44 are located on the same axis. The first spring plate mounting member 31 and the second spring plate mounting member 32 are arranged in the central portion 12a of the vertebra 12 (see arrow A4).

  Both fastening screw holes 45 are on the same axis as the first insertion holes 40 of the first opposing wall portion 39 of the first spring plate mounting member 31 in the first spring plate mounting member 31 disposed in the central portion 12 a of the vertebra 12. The 1st adhering piece 33 is arrange | positioned so that it may be located on a line (refer arrow A5).

  The support member 35 fixed to the clip base 17 is secondly arranged such that the swing shaft 51 is accommodated in the swing bearing receiving recess 47 and the support arm portion 53 is received in the support receiving recess 48. Insert from below the fixing piece 34 (see arrow A6 and FIG. 8). The second fixing piece 34 (see FIG. 9) in which the support member 35 is disposed is arranged such that each screw receiving hole 46 is positioned on the same axis as each second insertion hole 44 of the second opposing wall portion 43. It arrange | positions on the 2nd spring board attachment member 32 (refer arrow A7).

  A first spring plate mounting member 31 and a second spring plate mounting member 32 are disposed in the central portion 12a of the vertical bar 12, and a first fixing piece 33 is provided on the first spring plate mounting member 31 and a second spring plate mounting member. In the state in which the second fixing piece 34 is disposed on 32, each fastening member 36 is screwed into the screw receiving hole 46 of the second fixing piece 34, the second insertion hole 44 of the second spring plate mounting member 32, and the first spring plate mounting member. The first insertion hole 40 is inserted into the first insertion hole 40, and the head portion 36b is engaged with the stepped portion 46e of the screw receiving hole 46, and is screwed into the fastening screw hole 45 of the first fixing piece 33 (see arrow A8). As a result, the swing mechanism 30 is assembled to the vertebra 12, and the clip base 17 attached to the fixed portion 54 of the support member 35 swings relative to the vertebra 12 around the swing shaft 51 of the support member 35. They are movable and attached to each other. Therefore, the first fixing piece 33, the first spring plate mounting member 31, the second spring plate mounting member 32, and the second fixing piece 34 fastened by the two fastening members 36 are attached to the vertebra 12 as a spring plate member. Thus, the swing base portion 57 that holds the swing shaft 51 inside is formed, and the swing base portion 57 is supported by the clip base 17 via the swing support portion 52 so as to be swingable around the swing shaft 51. Yes. The relative swing between the vertebra 12 attached to the swing base portion 57 and the clip base 17 is supported as an extended portion inserted through the support portion insertion hole 49 in the swing support portion 52 of the support member 35. The range is limited by the arm portion 53 coming into contact with the inner wall surface defining the support portion insertion hole 49, which will be described later.

  The holding notch 18a of the clip 18 is fitted into the rivet 61 attached to the clip base 17, and the clip 18 is attached to the clip base 17 (see arrow A9). As a result, the clip 18 can swing around the rivet 61 with respect to the clip base 17. The attachment means 16 is attached by such a procedure. In addition, the attachment procedure of the attachment means 16 is not limited to a present Example.

  Here, in the wiper blade 10, when viewed in the longitudinal direction, both end portions of the swing base portion 57 that holds the vertebra 12 (both the first holding portion 37 and the second spring plate mounting of the first spring plate mounting member 31). Both the second clamping portions 41) of the member 32 come into contact with the two holders 13 (see FIG. 3) adjacent to the attachment opening 24b of the blade body 14, thereby causing the swing base 57 (attachment means) along the longitudinal direction. 16) and the relative displacement of the vertebra 12 are prevented. In this state, the wiper blade 10 configured as described above is mounted on the vehicle C with the tip 20a of the wiper arm 20 attached to the rotatable clip 18 (see FIG. 1). In this embodiment, when the wiper blade 10 is in the stationary position Ia, the wiper blade 10 is in the support receiving recess 48 that is the only opening to the outside of the rocking bearing insertion space 50 and the support insertion hole 49 that communicate with each other. An opening portion of the second fixing piece 34 to the fixing outer surface 34b is positioned below on the wiping surface S (see FIGS. 1 and 2).

  In the wiper blade 10 according to the present invention, the blade rubber 11 is smoothly reversed when moving from the forward path G to the backward path B or from the backward path B to the forward path G. The operation of the blade rubber 11 when the wiper blade 10 is reversed will be described.

  In the wiper blade 10, as described above, the wiping portion 11e of the wiping portion 11a of the blade rubber 11 presses the wiping surface S by the pressing force from the wiper arm 20 (see FIGS. 12 and 13). In this state, when the wiper arm 20 is driven, the wiper blade 10 is reciprocated on the wiping surface S to wipe the wiping surface S (see FIG. 1). During this reciprocation, the head 11b of the blade rubber 11 is held by the swing base 57 of the mounting means 16 via the vertebra 12 so that the head 11b is wiped as the wiper arm 20 is driven. It is reciprocated along the surface S. However, since the wiping portion 11e of the wiping portion 11a of the blade rubber 11 is in contact with the wiping surface S and slides on the wiping surface S, the head 11b sees in the traveling direction due to friction with the wiping surface S. Is also moved back and forth along the wiping surface S. In other words, in the blade rubber 11 and the vertebra 12, the swinging force as indicated by the arrow R shown in FIG. 12 acts on the forward path G, and the swinging force indicated by the arrow L shown in FIG. Power will act. Here, since the vertebra 12 holding the head 11b of the blade rubber 11 is attached to the wiper arm 20 via the attachment means 16, the blade rubber 11 is placed on the wiping surface S in the forward path G and the return path B. On the other hand, a predetermined inclination angle is set.

  Specifically, in the forward path G, as shown in FIG. 12, a counterclockwise swinging force R acts on the blade rubber 11, so that the attachment means 16 is fixedly attached to the vertical bra 12. A counterclockwise swinging force R also acts on the swinging base 57. Then, since the swing base 57 can swing relatively around the swing shaft 51 with respect to the clip base 17 on which the clip 18 to which the wiper arm 20 is mounted is provided, the counterclockwise rotation It will be inclined to the side. This inclination is limited by the bottom surface 53 d of the support arm portion 53 of the swing support portion 52 of the support member 35 coming into contact with the lower end surface 49 a positioned below the inner wall surface defining the support portion insertion hole 49. Is done. The lower end surface 49 a is formed by the upper surface of the second holding wall portion 42 of the second spring plate mounting member 32.

  Further, in the case of the return path B, as shown in FIG. 13, since the clockwise swinging force L acts on the blade rubber 11, the swinging base portion fixedly attached to the vertical bra 12 by the mounting means 16. A clockwise swinging force L is also applied to 57, and the swing base 57 is tilted clockwise. This inclination is limited by the upper surface 53 c of the support arm portion 53 of the swing support portion 52 of the support member 35 coming into contact with the upper end surface 49 b positioned above the inner wall surface defining the support portion insertion hole 49. Is done. The upper end surface 49 b is formed by a ceiling surface 48 a in the support receiving recess 48 of the second fixing piece 34. For this reason, the upper surface of the second holding wall portion 42 of the second spring plate mounting member 32 that is the lower end surface 49 a of the support portion insertion hole 49 and the support portion receiving recess 48 that is the upper end surface 49 b of the support portion insertion hole 49. The ceiling surface 48 a is a pair of opposing wall surfaces in the support portion insertion hole 49.

  As described above, in the wiper blade 10, the swing base 57 is inclined to the opposite side with respect to the clip base 17, that is, the wiper arm 20, when moving in the forward path G and when moving in the return path B. The Rukoto. Therefore, in the attachment means 16, the swing base portion 57 swings with respect to the clip base 17, so that the entire blade rubber 11 (axis viewed in the height direction of the blade rubber 11) is inclined with respect to the wiping surface S. The direction of the inclination is reversed when the swing base 57 shifts from the forward path G to the backward path B or from the backward path B to the forward path G. Therefore, the direction of the elastic deformation (deflection deformation) is reversed. It gives to the blade rubber 11, that is, the inversion of the blade rubber 11 is promoted.

  Therefore, in the wiper blade 10 of the present invention, the blade rubber 11 can be smoothly reversed when moving from the forward path G to the backward path B or from the backward path B to the forward path G. For this reason, the wiper blade 10 can wipe the wiping surface S appropriately. This is because, in the wiper blade, if the blade rubber is not smoothly reversed when the round-trip path is turned back, abnormal noise due to chattering occurs or wiping unevenness occurs on the wiping surface S.

  Further, since the wiper blade 10 is configured as a so-called flat wiper blade, it is possible to prevent the wiping surface S from being appropriately wiped due to adhesion of ice and snow. . This is because, for example, the vertebra is rotatably held at both ends of the four yokes, each of the yokes is rotatably held at both ends of the two secondary levers, and both the secondary levers are primary. A so-called tournament-type that is configured to have a plurality of hierarchical structures with a wiper arm attached to a clip base and a clip that are pivotally held at both ends of the lever and provided at a substantially central portion of the primary lever. In the wiper blade, when icy and snow adheres to the rotating locations connecting the layers and the rotation becomes impossible, the wiping surface S may not be properly wiped.

  Further, in the wiper blade 10, the attaching means 16 is a swing base 57 that can swing around the swing shaft 51 by a support member 35 fixed to the coupling mechanism 60 (the clip base 17 provided with the clip 18). The first fixing piece 33, the first spring plate mounting member 31, the second spring plate mounting member 32, and the second fixing piece 34 are configured to be supported, and swinging around the longitudinal direction and bending of the blade rubber 11 are configured. Due to the deformation, the blade rubber 11 is smoothly reversed when the reciprocating path is turned back. Therefore, the angle setting at the time of swinging is easy, and the wiping performance is good even when used for a long period of time. Reduction can be suppressed. The angle setting at the time of swinging is easy because the swing base 57 in the mounting means 16 swings with respect to the coupling mechanism 60, so that the entire blade rubber 11 with respect to the wiping surface S (the height of the blade rubber 11). This is because the tilt angle of the axis viewed in the direction can be set. In this embodiment, the inclination angle is set such that the bottom surface 53 d of the support arm portion 53 of the swing support portion 52 of the support member 35 is positioned at the support portion insertion hole 49 at an appropriate angle position with respect to the swing shaft 51. It is set so that it abuts on the lower end surface 49 a, or the upper surface 53 c of the support arm portion 53 of the swing support portion 52 of the support member 35 abuts (engages) with the upper end surface 49 b of the support portion insertion hole 49. The distance between the support arm portion 53 of the swing support portion 52 and the support portion insertion hole 49 may be set as appropriate. On the other hand, in the tournament-type wiper blade, the play provided at each connection location by the pivot support between a plurality of levels is used, but the play at each connection location is Since it is not provided for swinging in the longitudinal direction, there is a risk that the amount of play at each connection location may change due to repeated swinging.

  In the wiper blade 10, in the swing mechanism 30 of the mounting means 16, the support member 35 fixed to the clip base 17 has a swing shaft 51 formed by the second fixed piece 34 and the second spring plate mounting member 32. Since the support arm portion 53 of the swing support portion 52 is housed in the support portion insertion hole 49 and accommodated in the dynamic bearing insertion space 50, the periphery of the swing shaft 51 and the support arm portion 53 of the swing support portion 52. And ice and snow can be prevented from adhering between the support portion insertion hole 49 and the support portion insertion hole 49. For this reason, for example, even in a scene where it is snowing, it is possible to prevent the swing range of the swing mechanism from changing due to the adhesion of ice and snow, and the return of the reciprocating path can be reduced. In this case, the blade rubber 11 can be smoothly reversed. In particular, as in the present embodiment, when in the stationary posture Ia, the swing bearing insertion space 50 that communicates with each other and the first opening in the support portion receiving recess 48 that is the only opening to the outside of the support portion insertion hole 49. When the opening portion to the fixing outer surface 34b of the two fixing pieces 34 is positioned below on the wiping surface S (see FIGS. 1 and 2), it is possible to suppress the intrusion of ice and snow from the opening portion. Therefore, it is possible to more effectively suppress the snow and ice from adhering around the swing shaft 51 and between the support arm portion 53 of the swing support portion 52 and the support portion insertion hole 49.

  In the wiper blade 10, the swing mechanism 30 of the attaching means 16 causes the bottom surface 53 d of the support arm portion 53 of the swing support portion 52 of the support member 35 to come into surface contact with or support the lower end surface 49 a of the support portion insertion hole 49. Since the upper surface 53c of the support arm portion 53 of the swing support portion 52 of the member 35 is configured to come into surface contact with the upper end surface 49b of the support portion insertion hole 49, the force concentrates at one point at each contact portion. This can be prevented. For this reason, it is possible to improve the reliability of the swing function around the swing shaft 51 in the swing mechanism 30 of the mounting means 16 for a long time use or usage situation, and to prevent the wiping performance from being reduced. it can.

  In the wiper blade 10, the ceiling surface 48 a is inclined at the support portion receiving recess 48 of the second fixing piece 34, and the lower surface 53 d of the support arm portion 53 of the swing support portion 52 of the support member 35 is inclined, thereby wiping. Since the configuration is such that the inclination angle of the entire blade rubber 11 (axis viewed in the height direction of the blade rubber 11) with respect to the surface S is set, for example, the inclination angle of the blade rubber 11 is changed along with the change of the applied vehicle type. However, it is only necessary to change the second fixing piece 34 and the support member 35 (or the configuration of the swing mechanism 30), and it can be easily adapted to different vehicle types at low cost.

  In the wiper blade 10, the swinging mechanism 30 and the coupling mechanism 60 are arranged in parallel along the wiping surface S to constitute the mounting means 16, so that the height dimension of the mounting means 16 (that is, the wiper blade 10) (that is, the wiper blade 10). The size in the direction perpendicular to the wiping surface S) can be reduced. For this reason, the resistance of the wind at the time of reciprocating on the wiping surface S can be suppressed, the power of the wiper arm 20 can be suppressed, and the wiping performance can be improved.

  In the wiper blade 10, in the attachment means 16, the support member 35, the second fixing piece 34, and the second spring plate attachment member 32 formed from a single plate member are moved each time the wiper blade 10 reciprocates. Although they are in contact with each other, each has a shape that can be formed of a resin material or a metal material, so that the strength against contact can be made appropriate while ensuring the ease of manufacturing. .

  In the wiper blade 10, the swinging base portion of the mounting means 16 is formed by separate first fixing pieces 33, first spring plate mounting members 31, second spring plate mounting members 32, and second fixing pieces 34. Therefore, the attachment means 16 can be attached to the vertebra 12 easily and firmly.

  Therefore, in the wiper blade 10 according to the present embodiment configured as a flat wiper blade, the blade rubber 11 can be smoothly reversed at the time of turning back and forth of the reciprocating path without reducing the wiping performance.

  In the embodiment described above, the swing base 57 of the mounting means 16 is formed by the first fixing piece 33, the first spring plate mounting member 31, the second spring plate mounting member 32, and the second fixing piece 34 by the fastening member 36. Although the configuration is such that the vertebra 12 is clamped by being fastened, the oscillating base 57 may be anything that can be attached to the vertebra 12 while holding the oscillating shaft 51 therein. It is not limited to.

  Further, in the above-described embodiment, the swing shaft 51 and the swing support portion 52 are integrated in the attachment means 16, but may be separate and limited to the above-described embodiment. It is not a thing.

  Furthermore, in the above-described embodiment, in the swing mechanism 30 of the attachment means 16, the swing support fixed to the swing shaft 51 and the clip base 17 (connection base portion) rotatably accommodated in the swing bearing insertion space 50. Although the support member 35 having the portion 52 is used, the swing support portion supports the swing base (57) so as to be swingable around the swing axis with respect to the fixed connection base (clip base 17). As long as it does, it is not limited to the embodiments described above.

  In the above-described embodiment, the swing mechanism 30 of the attachment means 16 causes the bottom surface 53d of the support arm portion 53 of the swing support portion 52 of the support member 35 to come into surface contact with the lower end surface 49a of the support portion insertion hole 49, or Although the upper surface 53c of the support arm portion 53 of the swing support portion 52 of the support member 35 is in contact with the upper end surface 48b of the support portion insertion hole 49, the swing support portion swings around the swing axis. What is necessary is just to contact | abut so that the rocking | fluctuation range of the rocking | fluctuation base supported movably may be restrict | limited to a predetermined angle, It is not limited to an above-described Example.

  In the above-described embodiment, in the second fixing piece 34, the upper end surface 49b of the support portion insertion hole 49 is inclined with respect to the fixing bottom surface 34c, and in the support member 35, the lower surface 53d of the support arm portion 53 is the upper surface. 53c was inclined with respect to 53c, but the distance between the opposing wall surfaces of the support portion insertion hole and the extending portion of the swinging support portion swings so that the extending portion is in surface contact with both opposing wall surfaces. For example, when the clip base 17 is in a state of being horizontal with respect to the wiping surface S, the width direction may be set as long as it is set so as to expand at a constant rate from the shaft side toward the connection base side. The upper surface 53c of the support arm portion 53 may be inclined downward as it goes from the swing shaft 51 to the fixed portion 54, and the upper surface of the second holding wall portion 42 of the second spring plate mounting member 32 is From the swing shaft 51 to the fixed portion 54 It may be brought in upwardly directed inclined towards, but not limited to the aforementioned embodiments.

  In the above-described embodiment, the vertebra 12 as the spring plate member is illustrated. However, the spring plate member may be any member that is curved in the longitudinal direction so as to disperse the force when the center portion is pushed down and flattened. For example, it may be embedded along the longitudinal direction in the head of the blade rubber, and is not limited to the above-described embodiment.

  In the above-described embodiment, a scene (winter) in which ice and snow may adhere is described. However, if the wiper blade is a flat type, it has specifications corresponding to the summer (for example, change of blade rubber material). It may be present and is not limited to the above-described embodiments.

  In the above-described embodiment, the wiping surface S is configured by the windshield of the vehicle C, but it may be a rear glass and is not limited to the above-described embodiment.

1 is a schematic perspective view showing a vehicle to which a wiper blade according to the present invention is applied. It is a typical perspective view which shows the wiper blade which concerns on a present Example. FIG. 3 is an exploded perspective view showing the wiper blade according to the present embodiment in an exploded manner. It is sectional drawing obtained along the II line | wire shown in FIG. It is a typical perspective view which shows a holder. It is a typical perspective view which shows an attachment means. FIG. 5 is an exploded perspective view showing the attachment means in an exploded manner for each component in order to explain the configuration of the attachment means and the attachment method. It is a perspective view which shows typically the 2nd adhering piece and support member which are the structural members of an attachment means. It is a typical perspective view which shows the state which accommodated the support member in the rocking | fluctuation bearing insertion recess and support part reception recess of the 2nd adhering piece of FIG. It is explanatory drawing which shows sectional drawing obtained along the II-II line | wire shown in FIG. 9 with the member of the periphery. It is drawing for demonstrating a mode that the attachment means was mounted | worn to a vertebra by pinching | interposing a vertebra, and is sectional drawing obtained along the III-III line | wire shown in FIG. It is drawing for demonstrating the blade rubber operation | movement in an outward path, and is sectional drawing obtained along the III-III line | wire shown in FIG. It is drawing for demonstrating the blade rubber operation | movement in a return path, and is sectional drawing obtained along the III-III line | wire shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wiper blade 11 Blade rubber 11a Wiping part 11b Head part 12 Vertibra (as a spring board member) 16 Mounting means 17 Clip base (As a connection base part) 18 Clip (As a connection body part) 20 Wiper arm 30 Oscillation mechanism 32 Second spring plate attachment member (as a spring plate attachment portion) 34 Second attachment piece (as a fixation piece portion) 48 Support portion receiving recess 49 Support portion insertion hole 49a Lower end surface 49b (as an opposite wall surface) 50) Swing bearing entry space 51 Swing shaft 52 Swing support portion 53 Support arm portion (as an extension portion of the swing support portion) 57 Swing base 60 Connection mechanism 61 (As a connection shaft) Rivet C Vehicle S Wiping surface

Claims (5)

A blade rubber that has a long shape and has a wiping portion at the top and a wiping portion at the top as viewed in a cross section perpendicular to the longitudinal direction, and a length that fits the head of the blade rubber. A spring plate member having a scale shape that is concave and viewed in the longitudinal direction when viewed from the blade rubber side and is provided along the head, and holds the spring plate member at a substantially central portion of the spring plate member, Mounting means capable of being connected to a wiper arm provided in a vehicle, and reciprocatingly moving on the wiping surface in a direction crossing the longitudinal direction of the blade rubber and the spring plate member by swinging the wiper arm A wiper blade,
The attachment means includes a swing mechanism fixed to a substantially central portion of the spring plate member, and a connection mechanism that is attached to the swing mechanism and connects the swing mechanism to the wiper arm.
The swing mechanism is attached to the spring plate member, and has a swing base that holds a swing shaft disposed parallel to the longitudinal direction of the blade rubber and the spring plate member inside, and the swing base An oscillating support portion attached to the oscillating shaft on the inner side and oscillatingly supporting the oscillating base portion around the oscillating shaft;
The connection mechanism includes a connection main body portion to which the wiper arm is detachably connected, and the connection main body portion which is fixed to the swing support portion and is connected to the connection main body via a connection shaft and around the connection shaft. A wiper blade comprising a connecting base portion that rotatably supports the portion. The swing base portion has a support portion insertion hole that allows insertion of an extending portion between one end attached to the swing shaft and the other end fixed to the connection base portion of the swing support portion. And
The swing support portion has a swing range around the swing shaft when the extending portion is in contact with a pair of opposing wall surfaces positioned in the swing direction among the inner wall surfaces defining the support portion insertion hole. The wiper blade according to claim 1, wherein is limited to a predetermined angle.   The swing base portion and the swing support portion are configured such that a distance between the opposing wall surfaces of the support portion insertion hole and the extending portion of the swing support portion is such that the extending portion is in contact with the opposing wall surfaces. 3. The wiper blade according to claim 2, wherein the wiper blade is set so as to expand at a constant rate from the swing shaft side toward the connection base side so as to come into contact with the wiper blade.   4. The swing base portion according to claim 2, wherein the swing base portion has a swing bearing insertion space that is closed so that the swing shaft can be rotatably accommodated and communicates with the support portion insertion hole. Wiper blade. The swing base portion includes a spring plate mounting portion that is mounted to the spring plate member, and a fixing piece portion that is provided with a support receiving recess that allows the swing support portion to be received.
The support portion receiving recess is fixed to the spring plate mounting portion so that the fixing piece portion closes the open end of the support portion receiving recess with the spring plate mounting portion. The wiper blade according to any one of claims 2 to 4, wherein the support portion insertion hole is defined in cooperation with the spring plate mounting portion.

Images