JP2007118621A - Wiper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a constitution, and an assembling operation while improving adhesion in an entire longitudinal direction of a wiper blade in a wiper device connecting a wiper blade with an elastic member at a wiping member having a lip part to a wiper arm. <P>SOLUTION: A blade lever 5 connected to a wiper arm 1 is constituted to be connected to a wiper blade 2 via first and second connection parts J1, J2. The first connection part J1 is constituted in a manner that a slide piece 5c on a blade lever 5 side is slidably fitted with a slide groove 3e positioned on a window face side from an elastic member 4. The second connection part J2 is constituted to be rotatably fitted in a boss-like projection piece 5d on a blade lever 5 side between stopper pieces 6 embedded in the slide groove 3e. The blade lever 5 is constituted to slide and be assembled to the wiper blade 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention belongs to the technical field of wiper devices mounted on automobiles, ships and the like.

  Generally, in this type of wiper device, a wiping member provided with a lip portion for wiping the window surface at the tip, and an elastic member provided at the base end portion of the wiping member and urged so that the lip portion is in close contact with the window surface And a wiper blade that is connected to a wiper arm in the middle in the longitudinal direction. As described above, when the wiper blade is connected to the wiper arm at one place in the longitudinal direction, the window surface pressing force of the wiper blade that the wiper arm has is distributed to both ends in the longitudinal direction via the connecting portion of the wiper blade. However, the window surface pressing force by the wiper arm becomes smaller as it reaches the end with respect to the connecting portion of the wiper blade with the wiper arm, and there is a problem that wiping unevenness is difficult to be made uniform.

As an improvement measure, the wiper blade is connected to the wiper arm via a connecting member connected to two positions in the longitudinal direction of the wiper blade, and the pressing force of the wiper arm is applied to the two positions of the wiper blade so It has been proposed to increase the pressing force.
No. 5-6216

However, in the above-mentioned conventional one, the two connecting portions of the connecting member and the wiper blade are used as the pivot connecting portion. Specifically, the two are separated from the window surface in two longitudinal directions of the main body member constituting the wiper blade. The pin shaft supported by the connecting portion protruding in the direction is connected by being inserted through a long hole formed in the connecting portion of the yoke (connecting member). The pressing force that presses the wiper blade by the biasing ammunition provided on the wiper arm toward the window surface is transmitted to the wiper blade via the pin shaft that is located farther from the window surface than the main body member. . For this reason, the pressing force by the wiper arm reaches the blade rubber through the main body member, and the swing fulcrum is made outward from the main body member, and accordingly, the adhesion of the blade rubber to the window surface is inferior, and the wiper There exists a problem that the wiping performance in the both ends of a blade falls. Further, in this case, a long gap is formed in the blade length direction between the wiper blade and the connecting member, and there is a problem that the design is inferior.
Further, in this configuration, since the connecting member and the wiper blade are separately connected at two locations, there is a problem that the connecting operation becomes troublesome and complicated, and the present invention solves this problem. There are issues to be solved.

The present invention has been made in order to solve these problems in view of the above circumstances, and the invention of claim 1 is characterized in that a long connection is made to the tip of a wiper arm that performs reciprocal swinging. A wiping member having a lip portion for wiping the window surface at the front end and a wiping member disposed at the base end portion of the wiping member at both ends of the connecting member and biasing the lip portion toward the window surface side A wiper device having an elastic member for connecting the wiper blade to the window surface by a biasing force of a biasing ammunition provided on the wiper arm, wherein the connecting member is connected to the wiper blade on the window surface. Formed in a substantially U-shaped cross section with an intermediate piece abutting from the direction and a pair of side pieces opposed to both sides of the wiper blade in the wiping direction, and externally fitted to the wiper blade so that the blade can slide in the longitudinal direction of the blade And the configuration First the end portions and the wiper blade member, in which is configured to be connected via the second connection portion.
By doing so, not only can the configuration be simplified, but also the assembling work can be facilitated, and in addition, the connecting member can be externally fitted to the wiper blade to provide a wiper device with excellent design.
According to a second aspect of the present invention, in the first aspect, the first connecting portion is configured to be able to swing the wiper blade in the window surface direction, and the second connecting portion is configured to be relatively movable in the blade length direction. These first and second connecting portions are provided on the window surface side from the elastic member of the wiper blade, and by doing so, the wiper blade has good followability to the window surface curvature. In addition, the first and second connecting portions can be positioned close to the window surface, and a wiper device with excellent design can be obtained.
According to a third aspect of the present invention, in the wiper blade according to the first or second aspect, the slide groove having a wiping direction opened on both side portions closer to the window surface than the elastic member is formed longer in the blade length direction. The first connecting portion is configured to slidably engage a protruding piece provided on a side piece on one end side of the connecting member between a pair of stopper pieces embedded in the slide groove, and the window surface of the wiper blade The curvature of the window surface can be followed based on the swing of the direction, and by doing so, the wiper blade can be prevented from being displaced with respect to the connecting member.
According to a fourth aspect of the present invention, in any one of the first to third aspects, the second connecting portion moves a slide piece provided on a side piece on the other end side of the connecting member into the slide groove in the blade length direction. The configuration is such that the configuration can be freely engaged. By doing so, the configuration can be simplified.
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the connecting member is integrally provided with a fin for preventing the wiper blade from floating. The wiper blade can be prevented from being lifted, and a wiper device excellent in design can be obtained.
A sixth aspect of the present invention provides the wiper blade according to any one of the first to fifth aspects, wherein the wiper blade is formed in an M shape in which the first and second connecting portions are curved away from the window surface. By doing in this way, the adhesiveness with respect to the window surface of a wiper blade can be improved.
A seventh aspect of the present invention provides the method according to any one of the first to sixth aspects, wherein the connecting member is connected to the wiper arm so that the second connecting portion is located on a distal end side of the wiper arm. By making it, the adhesiveness to the window surface of a wiper blade can be improved.
An eighth aspect of the present invention is the method according to any one of the first to seventh aspects, wherein the connecting member is molded, and in this way, the connecting member can be easily formed.

According to the invention of claim 1, the configuration can be simplified, the assembling work is facilitated, and the connecting member is externally fitted to the wiper blade, and the design is excellent.
By making it the invention of Claim 2, the followability to the window surface curvature of the wiper blade can be improved, and the first and second connecting portions approach the window surface and are excellent in design.
According to the invention of claim 3, the wiper blade can be prevented from being displaced with respect to the connecting member.
With the invention of claim 4, the configuration can be simplified.
By setting it as invention of Claim 5, the wiper blade is prevented from floating and is excellent in design.
By setting it as invention of Claim 6, the adhesiveness with respect to the window surface of a wiper blade can be improved.
By setting it as invention of Claim 7, the adhesiveness to the window surface of a wiper blade can be improved.
According to the invention of claim 8, the connecting member can be easily formed.

Next, an embodiment of the present invention will be described based on the drawings of FIGS.
In the drawings, reference numeral 1 denotes a wiper arm constituting a wiper device, and the wiper arm 1 is supported on a vehicle body side whose base end portion is in the vicinity of the lower end portion of a windshield of a vehicle so as to be able to swing back and forth. The distal end portion of the wiper arm 1 is folded back into a substantially U shape and is formed at a joint portion 1a. The wiper blade 2 is connected to the joint portion 1a in a state described later. The wiper arm 1 is provided with an unillustrated urging ammunition and is configured to press the wiper blade 2 toward the window surface via the joint portion 1a. It has a configuration.

The wiper blade 2 is formed in a long shape and includes a rubber blade rubber (corresponding to a wiping member of the present invention) 3 and an elastic member 4. The blade rubber 3 is constituted by a lip portion 3a having a substantially inverted triangular cross section in which the sharpened portion at the lower end (tip) abuts the window surface, and has a wide base portion at the upper end via a neck portion 3b having a narrow cross section. 3c is integrally formed. The base portion 3c is open in both the left and right sides in FIG. 4 which are both sides in the wiping direction, and the longitudinal direction (blade length) with the groove 3d recessed toward the center side in the left and right directions in two stages. (Direction) is formed over the entire length, whereby two pairs of upper and lower concave grooves 3d are formed in the base portion 3c.
A pair of elastic members 4 are integrally fixed to the pair of left and right concave grooves 3d located on the upper side of the base portion 3c by an integration means such as an adhesive or a clip. It is composed of a long leaf spring that is curved in a natural state, and is formed in a longitudinally curved shape so as to be larger than the maximum curvature of the wiping range of the window surface in the natural state. On the other hand, the pair of left and right concave grooves 3d located on the lower side of the base portion 3c corresponds to the slide groove of the present invention, and will be described as the slide groove 3e hereinafter.

Reference numeral 5 denotes a blade lever corresponding to the connecting member of the present invention. The blade lever 5 is formed by integrally molding a resin material, and the base portion 3c of the blade rubber 3 constituting the wiper blade 2 is formed. It is set to be connected to the middle portion in the longitudinal direction. The blade lever 5 has a substantially U-shaped cross section over the entire length in the lever length direction, and includes a pair of opposing side piece portions 5a and an intermediate piece portion 5b that connects these side piece portions 5a. ing. As will be described later, when the blade lever 5 is connected to the wiper blade 2, the intermediate piece 5b covers the upper surface of the base portion 3c, and both side pieces 5a are the left and right side surfaces of the base portion 3c (both sides in the wiping direction). As a result, a longitudinal gap is formed between the blade lever 5 and the wiper blade 2 when the wiper blade 2 comes into contact with the window surface. There is no design. When the assembled blade lever 5 is connected to the wiper arm 1 supported by the vehicle body, the urging force of the urging ammunition of the wiper arm 1 acts on the blade lever 5, and both end portions of the intermediate piece 5b are at the base. It is set to abut against the portion 3c (wiper blade 2) and press toward the window surface. The intermediate piece 5b can be configured to be pressed not only at both ends of the base 3c but also over the entire length in the blade length direction by receiving a biasing force from the wiper arm 1.
The blade lever 5 may be formed using a metal material as well as a resin material.

Then, the first connecting portion of the present invention is disposed on one end portion in the longitudinal direction of the blade lever 5 (one end portion, when the wiper arm 1 is attached, on the side of the body bearing portion of the wiper arm 1). In order to constitute J1, projecting pieces 5c projecting in the wiping direction of the wiper blade 2 are provided so as to project toward the opposing side piece portions 5a, that is, in the direction orthogonal to the blade length direction. These projecting pieces 5c are formed in a cylindrical boss, and the protruding length is substantially equal to the groove depth of the slide groove 3e so as to engage with the slide groove 3e, which is the lower groove 3d formed in the base portion 3c. It is set to have the same length and is provided with a circumferential outer peripheral surface, and the outer diameter of the projecting piece 5c is dimensioned to be substantially the same as the groove width of the slide groove 3e.
Furthermore, in order to constitute the second connecting portion J2 of the present invention, both side piece portions 5a located at the other end portion in the longitudinal direction of the blade lever 5 (the other end portion and the tip end side of the wiper arm 1) Slide pieces 5d are provided so as to protrude toward the side piece portions 5a facing each other. These slide pieces 5d have a projection length substantially the same as the groove depth of the slide groove 3e in order to engage with the slide groove 3e, which is the lower groove 3d formed in the base portion 3c. Moreover, it has a plate thickness substantially the same as the groove width of the slide groove 3e and is formed in a plate shape having a predetermined length in the blade length direction so that it can slide in the blade length direction in the slide groove 3e. (Slidable).

  On the other hand, at one end portion of the slide groove 3e of the wiper blade 2 and corresponding to the first connecting portion J1, the protrusion 5c engaged (inserted) in the slide groove 3e is moved in the sliding direction. In order to regulate, the pair of stopper pieces 6 are embedded in advance integrally so as to sandwich the engaging space of the protruding piece 5c in the sliding direction. Of the pair of stopper pieces 6, the stopper piece 6 positioned on the other end side of the wiper blade 2 is formed with an inclined guide surface 6a that is closer to the groove bottom piece of the slide groove 3e toward the other end side. .

  The blade lever 5 has one end side of the blade lever 5 applied to the other end side of the wiper blade 2, and the projecting piece 5c on one end side of the blade lever 5 is engaged with the other end of the slide groove 3e. From the state, the blade lever 5 is slid toward one end of the wiper blade 2, and the other end of the blade lever 5 is opposed to the other end of the wiper blade 2. The part-side slide piece 5d is engaged with the other end of the slide groove 3e. Then, the blade lever 5 is slid so as to be positioned at the intermediate portion in the longitudinal direction of the wiper blade 2 with the slide piece 5d and the projecting piece 5c engaged with the slide groove 3e. It is set so that it can be incorporated into 2. At this time, the projecting piece 5c on the one end side of the blade lever 5 slides so as to get over the inclined guide surface 6a of the stopper piece 6 located on the other end side embedded in the slide groove 3e. In this way, the blade lever 5 is set to engage with the slide groove 3e in a state where the protrusion 5c is positioned by just engaging with the space between the stopper piece 6 and the stopper lever 6. The wiper blade 2 is set (installed) so that it is positioned in the blade length direction.

  The wiper arm 1 and the blade lever 5 are connected to each other. A joint portion 5e is formed on the upper surface of the intermediate piece 5b in the middle portion in the longitudinal direction of the blade lever 5, and the wiping direction is applied to the joint receiving portion 5e. The joint portion 1a at the distal end portion of the wiper arm 1 is engaged with a connecting pin 5f that is supported by facing through a connecting means such as a U-clip (not shown), so that the blade lever 5 uses the wiping direction as a swing support shaft. It is connected in a swingable state. In this attached state, the wiper blade 2 is connected so that the first connecting portion J1 is positioned on the side of the vehicle body bearing portion of the wiper arm 1, and the second connecting portion J2 is set to be positioned on the distal end side of the wiper arm 1. Has been.

  In the wiper device configured as described above, the wiper blade 2 is connected to the wiper arm 1 as shown in FIG. 6A, and in the natural state where the wiper blade 2 is not in contact with the window surface, the concave groove on the upper side of the blade rubber 3 is used. The posture is bent in a curved shape based on the rigidity of the elastic member 4 housed in 3d. In this state, when the wiper blade 2 is set on the window surface, the wiper blade 2 first comes into contact with the window surface at both ends in the curved direction and is attached to the wiper arm 1 via the blade lever 5. By receiving the urging force of the ammunition machine, as shown in FIG. 6B, the longitudinal intermediate portion is set so as to be bent and contact the window surface. At this time, the wiper blade 2 and the blade lever 5 are allowed to slide at the second connecting portion J2, are restricted from sliding at the first connecting portion J1, and move toward the window surface with the wiping direction as the rotation axis. The wiper blade 2 is set so as to change its posture along the curved surface of the window surface by allowing the swinging of. Then, the wiper blade 2 continues to be deformed (see FIG. 6C) so as to gradually move along the window surface by the urging force from the wiper arm 1, and as shown in FIG. 6D, the wiper blade 2 extends along the window surface. The wiping posture is set. Here, the wiper blade 2 transformed into the wiping posture exhibits a biasing force based on the elastic member 4 being in a state where the curved shape is forcibly extended. Moreover, when the wiper blade 2 receives the urging force from the wiper arm 1, the wiper blade 2 is slidable at the second connecting portion J2 with respect to the blade lever 5 interposed between the wiper arm 1 and the first connecting portion J1. In this case, the sliding movement is restricted and swinging in the window surface direction with the wiping direction as the rotation axis is allowed, so that the lip portion 3a is in close contact with the window surface over the entire length of the wiper blade 2. As a result, the wiper blade 2 can be bent in a state that matches the curvature of the window surface. Accordingly, in the wiping operation of the window surface by the wiper blade 2, the wiper blade 2 can be applied to the window surface whose curvature varies depending on the wiping site. Is appropriately changed so that each part in the longitudinal direction of the wiper blade 2 is evenly contacted (adhered) to improve wiping performance.

  Further, in this assembled state, the wiper blade 2 and the blade lever 5 are the bases (outside) of the first and second connecting portions J1 and J2 where the intermediate piece 5b is farther from the window surface than the elastic member 4. The portion 3c is pressed, and thereby, the pressing force by the wiper arm 1 is set to be reliably transmitted to the blade rubber 3. In addition, since the protrusion 5c for allowing the wiper blade 2 to swing in the window surface direction is configured to be located in the slide groove 3e positioned on the window surface side of the elastic member 4, the wiper blade 2 is pivoted in the direction close to the window surface, and the adhesion of the wiper blade 2 to the window surface at the other end portion (the portion closer to the tip than the wiper arm 1) is further enhanced. Is set to be able to. Further, the sliding movement can be restricted by the projecting piece 5c being clamped by the stopper piece 6, and the slide piece 5d of the second connecting portion J2 is formed with the slide groove 3e on the basis of the first connecting portion J1. The wiper blade 2 is set so as not to be displaced with respect to the blade lever 5 based on the movement.

  In the present embodiment configured as described above, the wiper blade 2 is connected to the wiper arm 1 via a blade lever 5. The wiper blade 2 and the blade lever 5 are first, Since they are connected at the second connecting portions J1 and J2 and are allowed to move and swing, the pressing force of the wiper blade 2 on the window surface can be made uniform. In addition, in this configuration, the blade lever 5 and the wiper blade 2 are incorporated by externally fitting the blade lever 5 to the wiper blade 2 and sliding it in the blade length direction, so that the configuration can be simplified. In addition, the assembling work becomes easy and the workability can be improved. In addition, the blade lever 5 is incorporated so as to cover the wiper blade 2 from the outside, and a gap is formed between the side of the wiper blade 2 and the blade lever 5 when the wiper blade 2 is brought into contact with the window surface. It can be made excellent in design.

In addition, in the embodiment of the present invention, the pressing force of the wiper blade 2 by the wiper arm 1 is made via the pressing piece 5b of the blade lever 5 and closer to the window surface than the elastic member 4 of the wiper blade 2. Since it is made at the first and second connecting portions J1 and J2 of the slide groove 3e positioned, the swing operation with respect to the curvature of the window surface of the lip portion 3c is smooth, the adhesion with the window surface is improved, and the wiping performance is excellent. And it can be set as the wiper apparatus excellent in the designability.
In addition, the wiper blade 2 and the blade lever 5 press the base portion 3c of the first and second connecting portions J1 and J2 where the intermediate piece portion 5b is farther from the window surface than the elastic member 4, so that the wiper arm 1 Thus, the blade rubber 3 can be reliably pressed.

  Further, in this case, in the first connecting portion J1, the sliding movement is restricted so as to prevent the positional displacement of the wiper blade 2 with respect to the blade lever 5, and the relative swinging in the window surface direction is allowed. In the two connecting portions J2, only relative sliding movement is allowed, so that it is possible to prevent positional displacement with respect to the blade lever 5, and it is possible to provide a wiper device that has good followability to changes in the curvature of the window surface.

In the embodiment in which the present invention is implemented, the first and second connecting portions J1 and J2 are both integrated with the slide groove 3e formed in the blade rubber 3 constituting the wiper blade 2 and the blade lever 5. Since the projecting piece 5c and the slide piece 5d are formed, the configuration can be simplified and the number of parts can be reduced.
Moreover, in this case, the protruding piece 5c and the slide piece 5d are each formed from a pair of side piece portions 5a of the blade lever 5, and these are respectively formed in the slide grooves 3e formed on both sides in the wiping direction. It is configured to engage and slide and swing. As a result, even if a load such as torsion is applied to the wiper blade 2, the first and second connecting portions J1 and J2 are smoothly moved and oscillated so that the wiper device has good operability. Can do.

  Further, in this structure, the second connecting portion J2 that slides is positioned on the tip side of the connecting portion between the wiper arm 1 and the blade lever 5, and the first connecting portion J1 that is allowed to swing is the vehicle body bearing of the wiper arm 1. Since the wiper blade 2 is slid over the window surface, the wiper blade 2 is naturally deformed, and the driver feels uncomfortable. Can be made.

  Of course, the present invention is not limited to the above embodiment, and the first connecting portion of the first embodiment is restricted in movement in the sliding direction by the stopper piece. It is also possible to set the facing interval to be larger than the outer diameter of the protruding piece so that the sliding movement can be performed within a preset sliding range. Further, as a configuration in which the wiper blade and the blade lever can move relative to each other, for example, a configuration in which a movement restricting member is provided only at one longitudinal end of the blade lever may be used.

Further, the shape of the projecting piece of the first connecting portion can be the same as that of the second embodiment shown in FIGS. 7 (A) and 7 (B).
In the second embodiment, the projecting piece 7a of the blade lever 7 has a shape that is long in the sliding direction, and is located on the side away from the window surface constituting the sliding groove 3e, that is, on the groove side surface (upper groove). A surface facing the side surface 3f is formed as a curved surface 7b that curves in the slide length direction. Then, by engaging the projecting piece 7a with the slide groove 3e while being held by the embedded stopper piece 6, the relative sliding movement of the wiper blade 2 and the blade lever 5 is restricted, and the curved shape is also reduced. Based on the fact that the curved surface 7b faces the flat upper groove side surface 3f, the relative swing in the window surface direction between the wiper blade 2 and the blade lever 7 is allowed.

Furthermore, the shape of the protruding piece of the first connecting portion can be the same as the third embodiment shown in FIGS. 7C and 7D.
In this structure, the protruding piece 8a of the blade lever 8 has a shape that is long in the sliding direction as in the second embodiment, and the other end side in the longitudinal direction is provided on the surface 8b that faces the upper groove side surface 3f. Only the curved surface is formed. Then, by engaging the projecting piece 8a with the slide groove 3e while being held by the embedded stopper piece 6, the relative sliding movement between the wiper blade 2 and the blade lever 5 is restricted, and the curved surface 8b is used. And the flat upper groove side surface 3f are opposed to each other, and only relative swinging in a direction in which the other end portion of the wiper blade 2 is brought close to the window surface is allowed.
And even in the second and third embodiments, as in the first embodiment, the required relative rocking in the window surface direction in the first connecting portion J1 becomes possible, By swinging using the pair of projecting pieces 7a and 8a located on the window surface side with respect to the elastic member 4, an effect that a smooth swing operation can be performed can be obtained.
Further, in these, the surfaces 7d and 8d on the wiper blade 2 side of the intermediate pieces 7c and 8c of the blade levers 7 and 8 are curved surfaces corresponding to guide the swinging based on the projecting piece curved surfaces 7b and 8b. By forming the second connecting portion J2, the second connecting portion J2 can be swung more smoothly.

  Moreover, as a slide piece which comprises a 1st connection part, in addition to forming in plate shape like said 1st embodiment, it is good also as a column shape, Furthermore, said 2nd, 3rd It is also possible to use the same shape as the projecting piece of the embodiment as the slide piece.

Further, the fourth embodiment shown in FIG. 8 may be used.
In this device, the blade lever 9 is integrally formed with fins 9a for preventing the wiper blade 10 from floating during high-speed traveling. Conventionally, in the wiper apparatus in which the wiper blade is provided with the elastic member, the fin for preventing the lifting is integrally formed with the elastic member. However, as in the fourth embodiment, the blade lever 9 necessary for the connection with the wiper arm is provided. By providing, the fin can be provided protruding in the wiping direction, and the thickness of the wiper blade 10 in the window surface contact / separation direction can be kept thin, which is excellent in design. Here, since the blade lever 9 is formed by integrally molding using a resin material or the like, not only the formation of the fin 9a is easy, but also it can correspond to various shapes according to the specifications. It becomes.
Further, the wiper blade 10 according to the fourth embodiment is such that the middle portion in the longitudinal direction is the window surface in a natural state in which the wiper blade 10 is separated from the window surface by the urging force of an elastic member (not shown) provided therein. It is formed in an M shape that curves to the side. Also in this case, the blade lever 9 and the wiper blade 10 are connected via the first and second connecting portions J1 and J2 as in the above embodiments, and the wiper blade 2 is formed in an M shape. As a result, the adhesion of the wiper blade 2 to the window surface is further improved, and a wiper device having excellent wiping performance can be obtained.

  Furthermore, it can also be configured as in the fifth embodiment shown in FIG. In this device, an M-shaped wiper blade 11 used in the fourth embodiment is connected to a connecting member (blade lever) 5 having the same configuration as that of the first embodiment. Even in this case, the wiper device is more excellent in the adhesion between the wiper blade 11 and the window surface.

It is a perspective view of the state where the blade lever was attached to the wiper blade. It is a perspective view of the state where the blade lever was attached to the wiper blade. It is a perspective view of a blade lever. 4A and 4B are a longitudinal sectional view and a sectional view taken along line XX in FIG. 5A and 5B are a cross-sectional view and a perspective view of the main part of the second connecting part, respectively. 6A, 6B, 6C, and 6D are pattern diagrams for explaining the contact state between the wiper blade and the window surface, respectively. 7A and 7B are cross-sectional views for explaining the second embodiment, respectively, enlarged views thereof, and FIGS. 7C and 7D are cross-sectional views for explaining the third embodiment, respectively. It is a figure and its enlarged view. It is a perspective view of the state where the blade lever was attached to the wiper blade explaining a 4th embodiment. It is a perspective view of the state where the blade lever was attached to the wiper blade explaining a 5th embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wiper arm 2 Wiper blade 3 Blade rubber 3e Slide groove 4 Elastic member 5 Blade lever 5a Side piece 5b Intermediate piece 5c Projection piece 5d Slide piece 6 Stopper piece J1 First connection part J2 Second connection part

Claims (8)

  A long connecting member is connected to the distal end portion of the wiper arm that performs reciprocal swinging, and a wiping member having a lip portion for wiping the window surface at the distal end at both ends of the connecting member, and a base end of the wiping member And a wiper blade provided with an elastic member that biases the lip portion toward the window surface side, and the wiper blade is pressed against the window surface by a biasing force of a biasing ammunition provided on the wiper arm. In the wiper device, the connecting member is formed in a substantially U-shaped cross section including an intermediate piece portion that comes into contact with the wiper blade from the window surface direction, and a pair of side piece portions facing both sides of the wiper blade in the wiping direction. The wiper device is configured to be externally fitted to the wiper blade so as to be slidable in the blade length direction, and to connect both end portions of the connecting member and the wiper blade via the first and second connecting portions.   2. The first connecting portion according to claim 1, wherein the first connecting portion is configured to be able to swing the wiper blade in the window surface direction, and the second connecting portion is configured to be relatively movable in the blade length direction. The wiper apparatus which provided the part located in the window surface side from the elastic member of the wiper blade.   3. The wiper blade according to claim 1, wherein the wiper blade is formed such that slide grooves that open in a wiping direction are formed in both side portions on the window surface side of the elastic member so as to be long in the blade length direction. Based on the swing of the wiper blade in the window surface direction, the protruding piece provided on the side piece on one end side of the member is slidably engaged between a pair of stopper pieces embedded in the slide groove. A wiper device that can follow the curvature of the window surface.   4. The structure according to claim 1, wherein the second connecting portion engages a slide piece provided on a side piece on the other end side of the connecting member with the slide groove so as to be movable in the blade length direction. Wiper device.   The wiper device according to any one of claims 1 to 4, wherein the connecting member is integrally provided with a fin for preventing the wiper blade from floating.   The wiper device according to any one of claims 1 to 5, wherein the wiper blade is formed in an M shape in which the first and second connecting portions are curved in a direction away from the window surface.   7. The wiper device according to claim 1, wherein the connecting member is connected to the wiper arm such that the second connecting portion is located on a distal end side of the wiper arm.   8. The wiper device according to claim 1, wherein the connecting member is molded.

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