JP2020032946A - Wiper blade - Google Patents

Abstract

To provide a wiper blade which prevents scattering of wiped-off water with a simpler configuration and has a high drainage capacity.SOLUTION: A wiper blade 1 is mounted on a wiper arm and is configured to be rotatable accompanying rotation of the wiper arm. The wiper blade 1 includes: a rubber support section 2; and a blade rubber supported by the rubber support section 2. In a state in which the wiper blade 1 is mounted, the rubber support section 2 and the blade rubber have an extension section 21 linearly extending from an end 2A at the circumferential direction inside toward the circumferential direction outside and an extension section 22 bending downward from an extension tip of the extension section 21 and linearly extending toward an end 2B at the circumferential direction outside. An angle between the extension section 21 and the extension section 22 is configured to be an obtuse angle.SELECTED DRAWING: Figure 3

Description

  TECHNICAL FIELD The present invention relates to a wiper blade capable of reducing scattering of wiping water due to centrifugal force of a wiper.

  Conventionally, in a wiper blade mounted on a vehicle, there has been a problem that water droplets are scattered outward in a circumferential direction of a wiping region due to centrifugal force at the time of rotation.

  On the other hand, in Patent Document 1, a lip portion (15) having a lip portion main body (16) extending in a predetermined direction and a lip protrusion (17) protruding laterally from the lip portion main body (16). ) Has been proposed (see FIG. 3 of Patent Document 1). In the wiper blade described in Patent Literature 1, the presence of the lip protrusion (17) prevents scattering of water droplets such as rainwater adhered to the wiping surface.

JP 2014-51127 A

  However, in Patent Document 1, there is a problem that the lip projection (17) must be provided separately from the lip body (16). Further, since the lip projection (17) is provided at a right angle or an acute angle with respect to the lip body (16), there remains a problem in drainage capacity.

  Therefore, an object of the present invention is to provide a wiper blade that has a simpler structure, prevents wiping water from scattering, and has a high drainage capacity.

  In order to achieve the above object, the present invention is a wiper blade attached to a wiper arm and configured to be rotatable along with the rotation of the wiper arm, wherein a rubber support portion and a rubber support portion are provided. A first rubber extending from a circumferential inner end to a circumferential outer in a state where the wiper blade is mounted, the rubber supporting portion and the blade rubber being provided. And a second extending portion that bends downward from the extension destination of the first extending portion and extends toward the outer end in the circumferential direction. The first extending portion and the second extending portion Is provided at an obtuse angle.

  The support portion includes a primary lever having an arm connection portion for connecting to the wiper arm at a substantially central portion, two secondary levers rotatably supported on both sides of the primary lever, and Four yoke levers rotatably supported on both sides of each of the two secondary levers, wherein the rubber support portion and the blade rubber are circumferentially outer ends of the primary lever. It is preferable to bend at.

  The support portion includes a main lever having an arm connecting portion for connecting to the wiper arm at a substantially central portion, and two yoke levers rotatably supported on both sides of the main lever. Preferably, the rubber support and the blade rubber are preferably bent between a substantially central portion and a circumferentially outer end of the lever.

  Preferably, the angle between the first extension and the second extension is 155 degrees.

  According to the present invention, in a state where the wiper blade is mounted, the rubber supporting portion and the blade rubber linearly extend from the inner end in the circumferential direction toward the outer circumferential direction, and the first extending portion; A second extending portion that bends downward from the extension destination of the first extending portion and extends linearly toward the outer end in the circumferential direction. And the angle between the 1st extension part and the 2nd extension part is constituted so that it may become an obtuse angle. Therefore, the wiping water is prevented from being scattered by a simpler configuration, and has a high drainage capacity.

1 is a diagram illustrating a front window of a vehicle including a wiper blade according to an embodiment of the present invention. The figure which shows the wiper blade of a driver's seat side. The arrow III view of FIG. The figure which shows the wiper blade of a passenger seat side. The arrow V view of FIG. The figure (a) which looked at the wiper blade which concerns on a modification from the direction parallel to a window surface, and the figure (b) which looked at from the direction orthogonal to a window surface.

<1. Embodiment>
A wiper blade according to an embodiment of the present invention will be described with reference to FIGS. In the following, as shown in FIG. 1, two wiper blades 1 and 10 for wiping water droplets adhered to a front window 91 of a vehicle will be exemplified as an example of a wiper blade. The wiper blade 1 is installed on a wiper arm 8 on the driver's seat side of the vehicle, and the wiper blade 10 is installed on a wiper arm 80 on the passenger seat side of the vehicle.

  First, the wiper blade 1 installed on the driver's seat side of the vehicle will be described with reference to FIGS. 2 and 3.

  As shown in FIG. 2, the wiper blade 1 includes a rubber support 2 and a blade rubber 3 supported by the rubber support 2. The rubber support 2 includes a primary lever 4, two secondary levers 5 rotatably supported on both sides of the primary lever 4, and four rotatable supports on both sides of each secondary lever 5. And the yoke lever 6.

  The primary lever 4 is connected to a wiper arm 8 (see FIG. 1) via a connecting clip at an arm connecting portion disposed substantially at the center thereof.

  Each yoke lever 6 is provided with claw portions 7 at both ends. The blade rubber 3 is supported by the four yoke levers 6 at the claws 7.

  Both ends of the primary lever 4 are outer connecting portions 4B, and these outer connecting portions 4B are connected to the inner connecting portions at the substantially central portions of the respective secondary levers 5.

  Similarly, both ends of each of the secondary levers 5 are connecting portions 5B, and these connecting portions 5B are connected to a connecting portion at a substantially central portion of each yoke lever 6.

  As shown in FIG. 3, the rubber support 2 includes an extending part 21 and an extending part 22. The extending portion 21 is a portion extending linearly from the inner end 2A in the circumferential direction toward the outer side in the circumferential direction. The extending portion 22 is a portion that bends downward from the extension destination of the extending portion 21 and linearly extends toward the outer end 2B in the circumferential direction. In addition, the extending part 21 is an example of a first extending part according to the present invention, and the extending part 22 is an example of a second extending part according to the present invention.

  In the present embodiment, the rubber support portion 2 is configured to bend at a circumferentially outer end portion 41 of the primary lever 4. Specifically, the rubber support 2 is bent such that the angle AG1 between the extension 21 and the extension 22 forms 155 degrees (obtuse angle). In other words, the extending portion 22 is bent downward by 25 degrees with respect to the extending portion 21.

  In FIG. 3, the blade rubber 3 supported by the rubber support 2 is not shown for simplification of description, but the blade rubber 3 is also bent in accordance with the bending of the rubber support 2. That is, the blade rubber 3 is also provided with a portion corresponding to the extending portion 21 and a portion corresponding to the extending portion 22.

  Next, the wiper blade 10 installed on the passenger seat side of the vehicle will be described with reference to FIGS. 4 and 5.

  The wiper blade 10 on the passenger seat side is shorter than the wiper blade 1 on the driver seat side in the longitudinal direction.

  Further, the rubber support 2 of the wiper blade 1 described above has been composed of three stages of the primary lever 4, the secondary lever 5, and the yoke lever 6, but as shown in FIG. 20 is composed of two stages: a main lever 40 and two yoke levers 60 rotatably supported on both sides of the main lever 40.

  The main lever 40 is connected to a wiper arm 80 (see FIG. 1) via a connecting clip at an arm connecting portion disposed substantially at the center thereof.

  Each yoke lever 60 is provided with claw portions 70 at both ends. The blade rubber 30 is supported by the two yoke levers 60 at the claws 70.

  As shown in FIG. 5, the rubber support 20 includes an extending part 210 and an extending part 220. The extending part 210 is a part that extends linearly from the circumferential inner end 20A toward the circumferential outer side. The extending portion 220 is a portion that is bent downward from the extension destination of the extending portion 210 and linearly extends toward the outer end portion 20B in the circumferential direction.

  In the present embodiment, the rubber support portion 20 is configured to bend in the middle of the main lever 40 from the substantially central portion to the circumferentially outer end portion 420. Specifically, the rubber support portion 20 is bent such that the angle AG2 between the extending portion 210 and the extending portion 220 forms 155 degrees (obtuse angle). In other words, the extending part 220 is bent downward by 25 degrees with respect to the extending part 210.

  Although illustration of the blade rubber 30 supported by the rubber support 20 is omitted in FIG. 5 for simplification of description, the blade rubber 30 is also bent along the bending of the rubber support 20. That is, the blade rubber 30 also includes a portion corresponding to the extending portion 210 and a portion corresponding to the extending portion 220.

  According to the above-described embodiment, as shown in FIGS. 2 and 3, in a state where the wiper blade 1 is mounted, the rubber support 2 and the blade rubber 3 move in the circumferential direction from the circumferential inner end 2 </ b> A. It has an extending portion 21 that extends linearly outward, and an extending portion 22 that bends downward from the extension destination of the extending portion 21 and linearly extends toward the outer end 2B in the circumferential direction. The angle AG1 between the extending portion 21 and the extending portion 22 is an obtuse angle (155 degrees). Therefore, the wiper blade 1 on the driver's seat side has a high drainage capability while preventing the wiping water from scattering with a simple configuration.

  According to the above-described embodiment, as shown in FIGS. 4 and 5, in a state where the wiper blade 10 is mounted, the rubber support portion 20 and the blade rubber 30 move from the circumferential inner end portion 20 </ b> A. An extending portion 210 that extends linearly outward in the circumferential direction, and an extending portion 220 that bends downward from the extension destination of the extending portion 210 and linearly extends toward the outer end 20B in the circumferential direction. Have. Further, the angle AG2 between the extending part 210 and the extending part 220 is an obtuse angle (155 degrees). Therefore, the wiper blade 10 on the passenger's seat side also has a high drainage capability while preventing the wiping water from scattering with a simple configuration.

  In particular, the wiping water of the rainwater due to the centrifugal force at the time of rotation of the wiper blades 1, 10 does not scatter in a straight line, but can flow in a curved line as shown by the broken line in FIG.

  Also, a rainwater line after wiping (after drainage) by the wiper blades 1 and 10 is unlikely to remain on the front window 91 (FIG. 1).

  Further, by setting the bending angle to 155 degrees, it is possible to more reliably prevent the scattering of rainwater as compared with the case where the bending angle is larger than 155 degrees, and to bend the wiper blades 1 and 10. The tip end can avoid contact with the car body (bonnet) 93.

  Further, as a result of the experiment, when the bending angle is set to 155 degrees, the drainage capacity is improved by about 30% as compared with a wiper blade formed in a straight line. Therefore, drainage capacity during heavy rain is high.

<2. Modification>
The wiper blade according to the present invention is not limited to the embodiment described above, and various modifications and improvements can be made within the scope described in the claims.

  For example, in the above-described embodiment, the case where the angles AG1 and AG2 form 155 degrees is illustrated. However, the present invention is not limited to this. If the angles are obtuse angles, a larger angle may be used, or a smaller angle may be used. Is also good. The angles AG1 and AG2 do not necessarily have to be the same value, but may be different values as long as they are obtuse angles.

  Further, in the above-described embodiment, the case where the rubber support portion 2 is configured to be bent at the circumferentially outer end portion 41 of the primary lever 4 has been exemplified. However, the present invention is not limited to this. For example, you may comprise so that it may bend in the middle of the primary lever 4).

  Further, in the above-described embodiment, the case where the rubber support portion 20 is configured to be bent in the middle of the main lever 40 from the substantially central portion to the outer end portion 420 in the circumferential direction has been described as an example. However, the main lever 40 may be configured to bend at another location (for example, the outer end in the circumferential direction of the main lever 40).

  Further, in the above-described embodiment, the case where the extending portions 21 and 22 constituting the rubber supporting portion 2 extend linearly has been exemplified, but the present invention is not limited to this. For example, a flexible member such as rubber may be used for the extension portions 21 and 22 so that the extension portions 21 and 22 extend in a curved shape (arc shape) when not attached. However, at the time of mounting, the extension portions 21 and 22 are deformed from an arc shape to a substantially straight shape because they are pressed against the front window 91 (dotted line in FIG. 6). At that time, as in the above embodiment, the extending portion 22 is bent downward by about 25 degrees with respect to the extending portion 21. Although the description is omitted, the rubber support portion 20 of the above-described embodiment can be similarly configured using a flexible member.

  As described above, the wiper blade according to the present invention is suitable for being installed on a front window or the like of a vehicle.

1,10 wiper blade, 2 rubber support, 2A, 2B end,
3 blade rubber, 4 primary levers, 4B outer connecting part,
5 Secondary lever, 5B connecting part, 6 Yoke lever, 7 Claw part,
8 wiper arms, 10 wiper blades, 20 rubber support,
20A, 20B end, 21, 22 extension, 30 blade rubber,
40 main lever, 41 end, 60 yoke lever, 70 claw,
80 wiper arm, 91 front window, 210, 220 extension,
420 end, AG1, AG2 angle

In order to achieve the above object, the present invention is a wiper blade attached to a wiper arm and configured to be rotatable along with the rotation of the wiper arm, wherein a rubber support portion and a rubber support portion are provided. A first rubber extending from a circumferential inner end to a circumferential outer in a state where the wiper blade is mounted, the rubber supporting portion and the blade rubber being provided. And a second extending portion that bends downward from the extension destination of the first extending portion and extends toward the outer end in the circumferential direction. The first extending portion and the second extending portion angle obtuse der between is, the first extending portion and the second extending portion is molded of a flexible member, at the time of non-wearing the first extending portion and the second extending portion is arcuate Stretched to CFC when installed The first extension portion and the second extension portion are deformed from a circular arc to a substantially linear shape by being pressed against a window, and the second extension portion is the first extension portion when viewed from a direction orthogonal to the front window surface. The present invention provides a wiper blade characterized by being bent downward with respect to.

Claims (4)

A wiper blade attached to the wiper arm and configured to be rotatable with the rotation of the wiper arm,
Rubber support,
A blade rubber supported by the rubber support,
With
In a state where the wiper blade is mounted, the rubber supporting portion and the blade rubber extend from a circumferential inner end to a circumferential outer side, and a stretching of the first extending portion. A second extending portion that bends downward from the tip and extends toward the outer end in the circumferential direction,
The wiper blade according to claim 1, wherein an angle between the first extending portion and the second extending portion is an obtuse angle. The rubber support,
A primary lever having an arm connecting portion for connecting to the wiper arm at a substantially central portion,
Two secondary levers rotatably supported on both sides of the primary lever,
Four yoke levers rotatably supported on both sides of each of the two secondary levers,
With
The wiper blade according to claim 1, wherein the rubber support and the blade rubber are bent at a circumferentially outer end of the primary lever. The rubber support,
A main lever having an arm connecting portion for connecting to the wiper arm at a substantially central portion,
Two yoke levers rotatably supported on both sides of the main lever, respectively;
With
The wiper blade according to claim 1, wherein the rubber support portion and the blade rubber bend between a substantially central portion and a circumferentially outer end portion of the main lever.   The wiper blade according to any one of claims 1 to 3, wherein an angle between the first extension part and the second extension part is 155 degrees.

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