Wiper device

Abstract

To provide a wiper device which suppresses a chattering phenomenon of a wiper blade with a simple structure and is capable of easily improving quietness of the wiper device.SOLUTION: A wiper blade 30 is provided with a tilting mechanism TM1 which tilts the wiper blade 30 against a surface 11a so that a center Ct1 of a U-shaped hook part 23b is arranged forward in a wiping direction of a center Ct2 of a blade rubber 50. Thus, in each of wiping back and forth of the wiper blade 30, it is possible to correctly tilt the blade rubber 50 against the surface 11a. Therefore, it is possible to suppress generation of inconveniences (a chattering phenomenon, reversing defect, rubber early wear, an increase in lifting force during high speed traveling, and the like) caused by incorrect tilting of the blade rubber 50 against the surface 11a. It is unnecessary to add new components, and it is possible to easily increase quietness of a wiper device 10.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a wiper device that wipes a surface to be wiped in accordance with the swinging motion of a swing shaft. [Background technology]

[0002] Conventionally, vehicles such as automobiles are equipped with wiper devices that wipe away rainwater, dust, and the like that have adhered to the surface (wiping surface) of the windshield. The wiper device includes a wiper arm whose base end is fixed to a pivot shaft and a wiper blade attached to the tip end of the wiper arm. The pivot shaft is oscillated by driving a wiper motor mounted on the vehicle, causing the wiper blade to wipe back and forth across the windshield, thereby wiping away rainwater, dust, and the like that have adhered to the surface of the windshield.

[0003] Such a wiper device is described, for example, in Patent Document 1. In the wiper device described in Patent Document 1, a pair of anti-chatter parts is provided on the arm cover that abuts against the outer surfaces of both side walls of the connecting block, and these anti-chatter parts grip the connecting block. This suppresses the chattering of the wiper blade and improves the quietness of the wiper device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-015636 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the wiper device described in Patent Document 1, a pair of anti-chatter parts is provided on the arm cover, and these anti-chatter parts grip the connecting block. Therefore, the arm cover is required, which not only increases the number of parts but also reduces the ease of assembly.

[0006] SUMMARY OF THE INVENTION An object of the present invention is to provide a wiper device that can suppress the chattering phenomenon of the wiper blade with a simple structure and can easily improve the quietness of the wiper device. [Means for solving the problem]

[0007] In one aspect of the present invention, there is provided a wiper device that wipes a surface to be wiped in accordance with the swinging movement of a swing shaft, the wiper device comprising: a wiper arm having a base end fixed to the swing shaft and a blade mounting portion provided at a tip end; and a wiper blade having a blade rubber that slides against the surface to be wiped and that is mounted on the blade mounting portion. ,before The wiper blade is provided with a blade mounting portion, the center of which is positioned forward of the center of the blade rubber in the wiping direction. ,before a tilting mechanism for tilting the wiper blade relative to the wiping surface. The tilting mechanism includes a clip member attached to the blade attachment portion, and a support member having a connecting pin to which the clip member is rotatably connected and supporting the blade rubber, the clip member including an engagement recess with which the connecting pin is engaged, and a pair of side wall portions disposed on both sides of the engagement recess in the axial direction of the connecting pin, and each of the pair of side wall portions has a first inclined surface facing the support member in the axial direction of the connecting pin, and a second inclined surface facing the support member in the axial direction of the connecting pin and facing the wiping surface side with respect to the first inclined surface. and a second inclined surface disposed on the opposite side, and when the wiper blade is inclined to one side with respect to the wiping surface, the first inclined surface on one side in the axial direction of the connecting pin abuts against the support member, and the second inclined surface on the other side in the axial direction of the connecting pin abuts against the support member, and when the wiper blade is inclined to the other side with respect to the wiping surface, the first inclined surface on the other side in the axial direction of the connecting pin abuts against the support member, and the second inclined surface on one side in the axial direction of the connecting pin abuts against the support member. It is characterized by the following. [Effects of the Invention]

[0008] According to the present invention, it is possible to correctly incline the blade rubber relative to the wiping surface when the wiper blade is wiping in the forward direction and when wiping in the backward direction. This prevents problems caused by the blade rubber not being correctly inclined relative to the wiping surface (such as chattering, poor reversal, early wear of the rubber, and increased lift during high-speed driving). This eliminates the need to add new parts (such as arm covers as in the past), and easily improves the quietness of the wiper device. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view showing a wiper device according to the present invention; [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 2 is a perspective view showing the tip side of the arm piece. [Figure 4] FIG. 2 is a perspective view of the clip member as seen from the arm piece side. [Figure 5]FIG. 4 is a perspective view of the clip member as seen from the windshield side. [Figure 6] FIG. 5 is a view taken along the arrow B in FIG. 4. [Figure 7] FIG. [Figure 8] FIG. 3 is a view taken along arrow C in FIG. 2. [Figure 9] 10A is a view showing a state in which the connecting pin is inclined counterclockwise relative to the clip member, and FIG. 10B is a view taken along the arrow D in FIG. [Figure 10] 10A is a view showing a state in which the connecting pin is inclined clockwise relative to the clip member, and FIG. 10B is a view taken along the arrow E in FIG. [Figure 11] 5(a) and 5(b) are cross-sectional views illustrating the operation of the wiper device according to the first embodiment. [Figure 12] FIG. 10 is a view corresponding to FIG. 2 showing a wiper device according to a second embodiment. [Figure 13] 10(a) and 10(b) are cross-sectional views illustrating the operation of the wiper device according to the second embodiment. [Figure 14] 8 is a view corresponding to FIG. 7 and showing a wiper device according to a third embodiment. FIG. [Figure 15] 10(a) and 10(b) are cross-sectional views illustrating the operation of the wiper device according to the third embodiment. [Figure 16] FIG. 10 is a perspective view showing a wiper device according to a fourth embodiment. [Figure 17] FIG. 17 is an exploded perspective view showing the tilting mechanism of the wiper device of FIG. 16. [Figure 18] 17(a) and 17(b) are cross-sectional views taken along the line FF in FIG. 16, illustrating the operation of the wiper device according to the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, the first embodiment of the present invention will be described in detail with reference to the drawings.

[0011] Figure 1 is an oblique view showing the wiper device of the present invention, Figure 2 is a cross-sectional view along line AA in Figure 1, Figure 3 is an oblique view showing the tip side of the arm piece, Figure 4 is an oblique view of the clip member from the arm piece side, Figure 5 is an oblique view of the clip member from the windshield side, Figure 6 is a view as viewed from arrow B in Figure 4, Figure 7 is an exploded oblique view of the area around the support member, Figure 8 is a view as viewed from arrow C in Figure 2, Figure 9(a) is a view showing a state in which the connecting pin is inclined counterclockwise relative to the clip member, (b) is a view as viewed from arrow D in (a), Figure 10(a) is a view showing a state in which the connecting pin is inclined clockwise relative to the clip member, (b) is a view as viewed from arrow E in (a), and Figures 11(a) and (b) are cross-sectional views explaining the operation of the wiper device of embodiment 1.

[0012] As shown in Figures 1 and 2, the wiper device 10 swings over a windshield 11 provided on the front side of a vehicle (not shown), such as an automobile, and wipes the surface (wiping surface) 11a of the windshield 11 in a reciprocating manner.

[0013] The wiper device 10 is formed to be long, and the base end side of the wiper device 10 is fixed by a fastening nut or the like (not shown) to the tip of a swing shaft 12 that is rotatably mounted on a vehicle body (not shown). As a result, when a wiper motor (not shown) is driven to swing the swing shaft 12, the wiper device 10 wipes the surface 11a of the windshield 11 in accordance with the swing movement of the swing shaft 12.

[0014] The wiper device 10 includes a wiper arm 20 arranged on the swing shaft 12 side (right side in Figure 1) in its longitudinal direction, and a wiper blade 30 arranged on the surface 11a side of the windshield 11 (left side in Figure 1).

[0015] The wiper arm 20 includes an arm head 21, an arm shank 22, and an arm piece 23. Specifically, the arm head 21, arm shank 22, and arm piece 23 are provided in this order from the swing shaft 12 side. The arm head 21 is formed into a curved, generally rod-like shape by casting aluminum or other material. This reduces the weight of the arm head 21, thereby reducing the load on the wiper motor.

[0016] A substantially cylindrically shaped oscillation shaft connecting portion 21a is integrally provided on the base end side (oscillating shaft 12 side) of the arm head 21. The tip end side of the oscillation shaft 12 is fixed to the oscillation shaft connecting portion 21a by serration fitting or the like, so that the rotational force of the oscillation shaft 12 is reliably transmitted to the arm head 21.

[0017] A shank connecting portion 21b to which the base end side of the arm shank 22 is connected is integrally provided on the tip side of the arm head 21 (the side of the surface 11a of the windshield 11). A pin member 21c extending in the short direction of the arm head 21 is provided on the shank connecting portion 21b, and a shank base end portion 22a of the arm shank 22 is rotatably connected to the pin member 21c.

[0018] The arm shank 22 is formed by pressing a steel plate or the like so that the cross section in the short side direction is substantially U-shaped. A shank base end portion 22a that is connected to the shank connecting portion 21b of the arm head 21 is provided on the base end side of the arm shank 22, and a shank tip portion 22b to which a piece base end portion 23a of the arm piece 23 is fixed is provided on the tip side of the arm shank 22.

[0019] Here, a tension spring (not shown) is housed inside the arm shank 22. One longitudinal side of the tension spring is hooked to the arm head 21, and the other longitudinal side of the tension spring is hooked to the arm shank 22. When the arm shank 22 is reclined relative to the arm head 21 (the state shown in FIG. 1), the tension spring presses the wiper blade 30 against the surface 11a of the windshield 11, and when the arm shank 22 is raised relative to the arm head 21 (locked-back state), the tension spring maintains the locked-back state.

[0020] 3, arm piece 23 is formed into a predetermined shape by bending a steel plate that is thicker than arm shank 22. A piece base end portion 23a (see FIG. 1) is provided on the base end side of arm piece 23, and piece base end portion 23a is fixed to shank tip portion 22b of arm shank 22 by fixing pin 22c and by crimping.

[0021] A U-shaped hook portion 23b is integrally formed on the tip side of the arm piece 23. A clip member 41 (see FIGS. 4 to 6) provided at the longitudinal center of the wiper blade 30 is inserted into the inside of the U-shaped hook portion 23b and fixed thereto. The U-shaped hook portion 23b corresponds to the blade mounting portion in the present invention. An engagement hole 23c penetrating the U-shaped hook portion 23b in the plate thickness direction is formed in the U-shaped hook portion 23b, and an engagement claw 41t (see FIG. 5) provided on the clip member 41 is engaged with the engagement hole 23c. This prevents the clip member 41 from coming off the arm piece 23.

[0022] In this manner, the base end side of the wiper arm 20 in the longitudinal direction is fixed to the swing shaft 12, and the wiper blade 30 is attached to the U-shaped hook portion 23b on the tip side of the wiper arm 20 in the longitudinal direction.

[0023] 1, 2 and 7, the wiper blade 30 includes a rubber holder 40 and a blade rubber 50. The rubber holder 40 holds the blade rubber 50 and is connected to the U-shaped hook portion 23b of the arm piece 23. The rubber holder 40 includes a clip member 41, a vertebra holding member 42, a pair of holder members 43, a pair of vertebras 44, a pair of end caps 45, a top cover 46, and a pair of bottom covers 47.

[0024] 4 to 6, clip member 41 is formed into a predetermined shape by injection molding a resin material such as plastic, and includes a clip body 41a that fits inside U-shaped hook portion 23b (see FIG. 3) of arm piece 23. A pair of side walls 41b are integrally formed with clip body 41a. As shown in FIG. 6, these side walls 41b are formed into a substantially rectangular shape when clip member 41 is viewed from the side (as viewed from arrow B in FIG. 4), and are arranged opposite each other with clip body 41a at the center.

[0025] An inner flat surface 41c is provided on the inside of each of the pair of side wall portions 41b, i.e., on the clip body 41a side. As shown in Figures 3 and 8, these inner flat surfaces 41c support a pair of side surfaces 23d that form the U-shaped hook portion 23b of the arm piece 23. This allows the clip member 41 to be attached to the arm piece 23 without shaking (rattle) in the direction of the dashed arrow in Figure 8.

[0026] Furthermore, a first inclined surface 41d and a second inclined surface 41e are provided on the outer sides of the pair of side wall portions 41b, i.e., on the side opposite to the clip main body 41a side. These first and second inclined surfaces 41d, 41e are connected to each other at a gentle inclination angle (obtuse angle), with the first inclined surface 41d being located on the windshield 11 side of the clip member 41 (the lower side in FIG. 6), and the second inclined surface 41e being located on the side opposite to the windshield 11 side (the upper side in FIG. 6).

[0027] 9(a) and 10(a), the connection portion 41f between the first inclined surface 41d and the second inclined surface 41e is the portion that protrudes most to the side of the clip member 41 when the clip member 41 is viewed from the front. Here, the connection portion 41f corresponds to the first abutment portion in the present invention, and extends in the longitudinal direction of the wiper blade 30.

[0028] A pair of connection portions 41f provided on the clip member 41 are respectively abutted against inner wall portions 42c of a pair of pin support walls 42b of the vertebra holding member 42 (see FIG. 7) when the clip member 41 is attached to the vertebra holding member 42 (see FIG. 8). This allows the clip member 41 to be attached to the vertebra holding member 42 without swinging (rattle) in the direction of the dashed arrow in FIG. 8.

[0029] Here, in a direction intersecting the longitudinal direction of the wiper blade 30, a first inclined surface 41d and a second inclined surface 41e are respectively arranged on both sides of the connection portion 41f of the clip member 41, and these first and second inclined surfaces 41d, 41e allow the vertebra holding member 42 to be inclined relative to the clip member 41.

[0030] 4 to 6, a groove 41g into which the connecting pin 42d (see FIG. 7) of the vertebra holding member 42 is inserted is provided in the front portions of the clip main body 41a and the pair of side wall portions 41b, i.e., the portion located on the bottom side (left side in FIG. 3) of the U-shaped hook portion 23b. As shown in FIG. 6, the groove 41g is formed in a substantially U-shape when the clip member 41 is viewed from the side, and includes an engagement recess 41h into which the connecting pin 42d engages, and an opening 41k that guides the engagement of the connecting pin 42d with the engagement recess 41h.

[0031] Groove 41g extends in the axial direction of connecting pin 42d, and connecting pin 42d engaged with engaging recess 41h is able to swing freely within a predetermined angular range (±α°) relative to surface 11a of windshield 11 inside engaging recess 41h, as shown in Figures 9 to 11. In other words, connecting pin 42d is tiltable in the wiping direction relative to clip member 41. In this embodiment, α° is set to approximately 5°.

[0032] A pin support portion 41m that supports the longitudinal center portion of the connecting pin 42d is provided at the center of the engagement recess 41h in the longitudinal direction (the axial direction of the connecting pin 42d). The pin support portion 41m protrudes toward the windshield 11 (see FIGS. 2 and 11) and supports the connecting pin 42d so that it can swing freely like a seesaw. Specifically, as shown in FIG. 2, tapered portions 41n that gradually increase the gap between the connecting pin 42d and the pin support portion 41m are provided on both sides of the pin support portion 41m in the longitudinal direction of the engagement recess 41h as the distance from the pin support portion 41m increases. This allows the connecting pin 42d to swing like a seesaw inside the engagement recess 41h, as shown in FIGS. 9 to 11.

[0033] 6, pin support portion 41m and the pair of tapered portions 41n are provided on the bottom side (upper side in the figure) of engagement recess 41h, and the width dimension W of engagement recess 41h is approximately the same as the diameter dimension DM of connecting pin 42d (see FIGS. 9 and 10) (W≈DM). Specifically, the dimensions are such that connecting pin 42d can swing inside engagement recess 41h but does not wobble (rattle) in the direction of the dashed arrow in FIG.

[0034] 5, an operating lever 41p is integrally provided on the windshield 11 side (the front side of FIG. 5) of the clip body 41a and on the rear side of the clip body 41a relative to the groove 41g (the right side of FIG. 5). The operating lever 41p is operated by an operator when removing the wiper blade 30 attached to the arm piece 23. The base end side (the left side of FIG. 5) of the operating lever 41p is elastically deformable relative to the clip body 41a, and an operating part 41s that is pressed by an operator is integrally provided on the tip end side (the right side of FIG. 5) of the operating lever 41p. An engaging claw 41t that engages with the engaging hole 23c (see FIG. 3) of the U-shaped hook portion 23b is also integrally provided on the base end side (the left side of FIG. 5) of the operating lever 41p.

[0035] Here, to disengage the engagement claw 41t engaged with the engagement hole 23c of the U-shaped hook portion 23b and remove the wiper blade 30 attached to the arm piece 23, the operator simply presses the operating portion 41s with a predetermined pressure.

[0036] 2 and 7, the vertebra holding member 42 is formed into a predetermined shape by punching and bending a steel plate, and holds a pair of vertebras 44 at a predetermined distance from each other. Specifically, the vertebra holding member 42 has a total of four vertebra holding claws 42a, and these vertebra holding claws 42a are fixed by crimping to each of the pair of vertebras 44. As a result, the pair of vertebras 44 are firmly fixed to the vertebra holding member 42, respectively.

[0037] The vertebra holding member 42 also has a pair of pin support walls 42b. These pin support walls 42b stand upright relative to the windshield 11, and an inner wall portion 42c is formed on the inside thereof. A connecting pin 42d made of a round steel rod is provided so as to cross between the pair of pin support walls 42b, i.e., between the opposing inner wall portions 42c. Both ends of the connecting pin 42d in the longitudinal direction are fixed to the pin support walls 42b by caulking or the like. The connecting pin 42d is formed in a simple cylindrical shape with a constant diameter dimension DM (see Figures 9 and 10) in the longitudinal direction, and is engaged with an engaging recess 41h (see Figure 5) of the clip member 41.

[0038] Here, the vertebra holding member 42 corresponds to the support member in the present invention. The inner wall portion 42c of the pin support wall 42b corresponds to the second abutment portion in the present invention. That is, as shown in Fig. 7 and Fig. 8, the inner wall portion 42c extends in the longitudinal direction of the wiper blade 30, and the connecting portion 41f of the clip member 41 abuts against the inner wall portion 42c (see Fig. 8).

[0039] 1, 7 and 8, a pair of holder members 43 are provided on both longitudinal sides of the vertebra holding member 42. The holder member 43 includes a holder body 43a made of hard plastic and fin portions 43b made of a flexible elastic material (rubber). Specifically, the holder member 43 is formed into a long rod shape by extrusion molding two types of molten material.

[0040] Here, the holder main body 43a is held by a pair of vertebras 44 held by the vertebra holding member 42, and holds the main body 51 (see Figure 2) of the blade rubber 50. In other words, the vertebra holding member 42 supports the blade rubber 50 via the pair of vertebras 44 and the pair of holder members 43.

[0041] Furthermore, the fin portion 43b receives wind when the vehicle is traveling and applies downforce to the blade rubber 50. In this way, the fin portion 43b improves the appearance of the wiper device 10 and also improves the wiping performance when the vehicle is traveling at high speeds.

[0042] 1, an end cap 45 is attached to each holder member 43. Specifically, the end cap 45 is attached to the opposite side of the holder member 43 in the longitudinal direction from the vertebra holding member 42 side (the longitudinal center side of the wiper blade 30). The end cap 45 covers and conceals the ends of the holder member 43, the vertebra 44, and the blade rubber 50, thereby improving the overall appearance of the wiper blade 30.

[0043] 2, the blade rubber 50 slides over the surface 11a and includes a main body 51 held by the holder member 43 and a lip 52 that contacts the surface 11a of the windshield 11. A thin neck 53 is provided between the main body 51 and the lip 52. This allows the lip 52 to tilt as the wiper blade 30 moves in the forward and backward directions (to the left and right in FIG. 2). This allows rainwater, dust, and the like adhering to the surface 11a of the windshield 11 to be completely wiped away.

[0044] The pair of vertebras 44 that hold the pair of holder members 43 are leaf springs formed by punching a stainless steel plate or the like into a rod shape. These vertebras 44 are provided over the entire length of the wiper blade 30, and their length is approximately equal to that of the wiper blade 30.

[0045] The vertebra 44 is curved in advance to a predetermined curvature in a free state with no external force applied. Specifically, the curvature of the vertebra 44 is set to be smaller than the curvature of the windshield 11. This allows the entire longitudinal area of ​​the lip portion 52 to be in close contact with the surface 11a of the windshield 11. In other words, by making the curvature of the vertebra 44 smaller than the curvature of the windshield 11, sufficient wiping performance of the wiper blade 30 is ensured.

[0046] As shown in Figures 2 and 7, a top cover 46 is attached to the vertebra holding member 42. The top cover 46 is formed into a predetermined shape from a resin material such as plastic, and covers the periphery of the vertebra holding member 42. This improves the appearance of the area around the vertebra holding member 42 on the wiper blade 30. The top cover 46 is provided with a plurality of first cover claws 46a (only two are shown in Figure 7). The top cover 46 is fixed to the vertebra holding member 42 by hooking these first cover claws 46a onto the pin support wall 42b of the vertebra holding member 42.

[0047] Furthermore, a pair of bottom covers 47 are attached to the side of the vertebra holding member 42 opposite to the top cover 46 side, i.e., on the windshield 11 side. These bottom covers 47 are formed in a roughly rod shape from a resin material such as plastic, and cover the windshield 11 side of the vertebra holding member 42. A plurality of second cover claws 47a are provided on each of the pair of bottom covers 47. Specifically, a total of eight second cover claws 47a are provided on each bottom cover 47. As shown in FIG. 2, the plurality of second cover claws 47a are hooked onto the pair of vertebras 44, respectively.

[0048] In this way, the top cover 46 is fixed to the vertebra holder 42, and the pair of bottom covers 47 are respectively fixed to the pair of vertebras 44. This covers the exposed portions of the metal vertebra holder 42 and the pair of vertebras 44, thereby improving the overall appearance of the wiper blade 30.

[0049] Here, in this embodiment, the tilting mechanism TM1 is formed by a clip member 41 attached to the U-shaped hook portion 23b (see Figure 3) of the arm piece 23, and a vertebra holding member 42 having a connecting pin 42d to which the clip member 41 is rotatably connected and supporting the blade rubber 50.

[0050] That is, in this embodiment, the tilting mechanism TM1 is provided in the wiper blade 30. Specifically, as shown in Fig. 11, the connecting pin 42d of the vertebra holding member 42 can be tilted in the wiping direction (left and right direction in the figure) relative to the clip member 41.

[0051] The operation (tilting state) of the tilting mechanism TM1 in this embodiment will be described in detail below with reference to FIGS.

[0052] [When wiping on the way out] First, when the wiper motor (not shown) is driven to rotate the swing shaft 12 (see FIG. 1) in the forward direction (clockwise), the wiper device 10, which is made up of the wiper arm 20 and the wiper blade 30, starts a forward wiping operation. Then, the wiper blade 30 is pulled and moved in the forward wiping direction (left side in the figure) by the driving force of the wiper arm 20, as shown in FIG. 11(a). This tilts the lip portion 52 of the blade rubber 50, and the first corner C1 on the forward wiping side of the lip portion 52 slides over the surface 11a of the windshield 11. This completely wipes away rainwater, dust, and the like adhering to the surface 11a.

[0053] At this time, a certain amount of friction (dynamic friction) is generated between the first corner C1 of the lip portion 52 and the surface 11a, and furthermore, a pressing force F as shown in Fig. 9(a) acts on the wiper blade 30 from the wiper arm 20 toward the windshield 11 due to the spring force of the tension spring. This activates the tilting mechanism TM1, and the wiper blade 30 assumes a position as shown in Fig. 11(a) relative to the wiper arm 20.

[0054] 9(a) and 11(a), the outer circumferential portion of the connecting pin 42d comes into contact with the tapered portion 41n of the pair of tapered portions 41n of the clip member 41 that is on the opposite side from the forward wiping direction (the right side in the figure). More specifically, the wiper blade 30 is inclined by +α° with respect to the wiper arm 20. At this time, the wiper blade 30 is pressed by the wiper arm 20 with a pressing force F, and therefore the connecting pin 42d does not come out of the engaging recess 41h.

[0055] Furthermore, the first inclined surface 41d on the forward wiping direction side (left side in the figure) abuts against the inner wall portion 42c, and the second inclined surface 41e on the opposite side to the forward wiping direction side (right side in the figure) abuts against the inner wall portion 42c. This prevents the wiper blade 30 from tilting further relative to the wiper arm 20 (tilting of approximately 5° or more), which may result in a deterioration in wiping performance.

[0056] That is, the first and second inclined surfaces 41d, 41e provided on the clip member 41 and the inner wall portion 42c of the pin support wall 42b provided on the vertebra holding member 42 correspond to an inclination angle regulating portion that regulates the maximum inclination angle of the wiper blade 30 relative to the surface 11a.

[0057] In this way, the tilting mechanism TM1 consisting of the clip member 41 and the vertebra holding member 42 tilts the wiper blade 30 relative to the surface 11a of the windshield 11 as it moves in the forward wiping direction, as shown in Figure 11(a) , so that the center Ct1 of the U-shaped hook portion 23b is positioned further forward in the wiping direction (to the left in the figure) than the center Ct2 of the blade rubber 50. This makes it possible to properly tilt the blade rubber 50 relative to the surface 11a, and the first corner C1 of the lip portion 52 slides smoothly over the surface 11a without causing any chattering, allowing rainwater, dust, etc. to be wiped away cleanly.

[0058] At this time, one axial end of the connecting pin 42d moves as shown by the arrow M1 in Fig. 9(b) when viewed from the rear in the wiping direction (the direction of the arrow D in Fig. 9(a)). However, the connecting pin 42d does not move in the longitudinal direction of the clip member 41 as shown by the arrow × in Fig. 9(b).

[0059] Thereafter, the wiper device 10 performs a reversing operation at the reversing position above the windshield 11. Specifically, the wiper device 10 transitions from a forward wiping operation (see FIGS. 9(a) and 11(a)) to a backward wiping operation (see FIGS. 10(a) and 11(b)). At this time, the wiper blade 30 can be tilted within a predetermined angle range (±α°) relative to the wiper arm 20, as described above. This reliably prevents the blade rubber 50 from being unable to reverse correctly and the first corner C1 of the lip portion 52 from remaining in contact with the surface 11a.

[0060] If the blade rubber 50 cannot be reversed correctly, that is, if the first corner C1 of the lip portion 52 remains in contact with the surface 11a as shown in Fig. 11(a) and the wiper starts the backward wiping operation as shown in Fig. 11(b), chattering will occur more severely, causing damage to the blade rubber 50 and generating loud noise. Therefore, it is important to reverse the blade rubber 50 correctly (accurately) not only at the upper reversal position but also at the lower reversal position.

[0061] [When wiping on the return journey] When the wiper motor is driven to rotate the swing shaft 12 in the opposite direction (counterclockwise), the wiper device 10, which is made up of the wiper arm 20 and the wiper blade 30, begins a backward wiping operation. The wiper blade 30 is then pulled and moved in the backward wiping direction (to the right in the figure) by the driving force of the wiper arm 20, as shown in FIG. 11(b). This tilts the lip portion 52 of the blade rubber 50, and the second corner C2 on the backward wiping side of the lip portion 52 slides over the surface 11a of the windshield 11. This completely wipes away rainwater, dust, and other debris adhering to the surface 11a.

[0062] At this time, a certain amount of friction (dynamic friction) is generated between the second corner C2 of the lip portion 52 and the surface 11a, and furthermore, a pressing force F as shown in Fig. 10(a) acts on the wiper blade 30 from the wiper arm 20 toward the windshield 11 due to the spring force of the tension spring. This activates the tilting mechanism TM1, and the wiper blade 30 assumes a position as shown in Fig. 11(b) relative to the wiper arm 20.

[0063] 10(a) and 11(b), the outer circumferential portion of the connecting pin 42d comes into contact with the tapered portion 41n of the pair of tapered portions 41n of the clip member 41 that is on the opposite side from the backward wiping direction (the left side in the figures). More specifically, the wiper blade 30 is inclined by -α° with respect to the wiper arm 20. At this time, the wiper blade 30 is pressed by the wiper arm 20 with a pressing force F, and therefore the connecting pin 42d does not come out of the engaging recess 41h.

[0064] Furthermore, the first inclined surface 41d on the backward wiping direction side (right side in the figure) abuts against the inner wall portion 42c, and the second inclined surface 41e on the opposite side to the backward wiping direction side (left side in the figure) abuts against the inner wall portion 42c. This prevents the wiper blade 30 from tilting further relative to the wiper arm 20 (tilting of approximately 5° or more), which may result in a deterioration in wiping performance.

[0065] In this way, the tilting mechanism TM1 consisting of the clip member 41 and the vertebra holding member 42 tilts the wiper blade 30 relative to the surface 11a of the windshield 11 as it moves in the backward wiping direction, so that the center Ct1 of the U-shaped hook portion 23b is positioned further forward in the wiping direction (to the right in the figure) than the center Ct2 of the blade rubber 50, as shown in Figure 11(b). This makes it possible to properly tilt the blade rubber 50 relative to the surface 11a, and the second corner C2 of the lip portion 52 slides smoothly over the surface 11a without causing any chattering, allowing rainwater, dust, etc. to be wiped away cleanly.

[0066] At this time, one axial end of the connecting pin 42d moves as shown by arrow M2 in Fig. 10(b) when viewed from the front in the wiping direction (the direction of arrow E in Fig. 10(a)). However, the connecting pin 42d does not move in the longitudinal direction of the clip member 41 as shown by arrow × in Fig. 10(b).

[0067] 2 shows the wiper device 10 in a "reference state" in which the wiper blade 30 is not tilted relative to the wiper arm 20. That is, in the wiper device 10 in the "reference state" shown in FIG. 2, the center Ct1 of the U-shaped hook portion 23b is not positioned further forward in the wiping direction (left or right in the figure) than the center Ct2 of the blade rubber 50. Specifically, in the "reference state," the center Ct1 of the U-shaped hook portion 23b and the center Ct2 of the blade rubber 50 are both positioned on a perpendicular line LN1 to the windshield 11.

[0068] As described above, when the wiper blade 30 is inclined relative to the wiper arm 20 during forward wiping and backward wiping, the positional relationship between the center Ct1 of the U-shaped hook portion 23b and the center Ct2 of the blade rubber 50 becomes as shown in Figures 11(a) and 11(b). Specifically, the center Ct2 of the blade rubber 50 is on the perpendicular line LN1, but the center Ct1 of the U-shaped hook portion 23b deviates from the perpendicular line LN1 and moves onto the perpendicular line LN2 forward in the wiping direction.

[0069] In this way, the tilting mechanism TM1 has the function of tilting the wiper blade 30 relative to the surface 11a of the windshield 11 so that the center Ct1 of the U-shaped hook portion 23b is positioned further forward in the wiping direction than the center Ct2 of the blade rubber 50, i.e., so that the center Ct1 of the U-shaped hook portion 23b moves further forward in the wiping direction than the center Ct2 of the blade rubber 50.

[0070] As described above in detail, according to the wiper device 10 of this embodiment, the wiper blade 30 is provided with a tilting mechanism TM1 that tilts the wiper blade 30 relative to the surface 11a so that the center Ct1 of the U-shaped hook portion 23b is positioned further forward in the wiping direction than the center Ct2 of the blade rubber 50.

[0071] This allows the blade rubber 50 to be correctly inclined with respect to the surface 11a when the wiper blade 30 is wiping in the forward direction and wiping in the backward direction. This prevents problems (such as chattering, poor reversal, early wear of the rubber, and increased lift during high-speed driving) caused by the blade rubber 50 not being correctly inclined with respect to the surface 11a. This eliminates the need to add new parts (such as arm covers as in the past), and easily improves the quietness of the wiper device 10.

[0072] In addition, according to the wiper device 10 of this embodiment, a tilting mechanism TM1 is provided on the wiper blade 30, and the tilting mechanism TM1 comprises a clip member 41 attached to the U-shaped hook portion 23b, a connecting pin 42d to which the clip member 41 is rotatably connected, and a vertebra holding member 42 that supports the blade rubber 50, and the connecting pin 42d is tiltable in the wiping direction relative to the clip member 41.

[0073] As a result, it is possible to realize a tilt mechanism TM1 that can suppress the occurrence of chattering simply by changing the shape of the clip member 41. This makes it possible to easily manufacture the tilt mechanism TM1 without increasing the number of parts.

[0074] Furthermore, according to the wiper device 10 of this embodiment, the clip member 41 has an engagement recess 41h into which the connecting pin 42d engages, and a pin support portion 41m that supports the longitudinal center portion of the connecting pin 42d is provided in the longitudinal center portion of the engagement recess 41h, and tapered portions 41n are provided on both sides of the pin support portion 41m in the longitudinal direction of the engagement recess 41h, which gradually increase the gap with the connecting pin 42d as they move away from the pin support portion 41m.

[0075] This allows the clip member 41 to be easily manufactured without complicating the shape of the clip member 41. Furthermore, since the complexity of the shape of the clip member 41 can be suppressed, the complexity of the shape of the mold used to mold the clip member 41 can also be suppressed, making it possible to extend the life of the mold.

[0076] Furthermore, according to the wiper device 10 of this embodiment, the clip member 41 has a connection portion 41f extending in the longitudinal direction of the wiper blade 30, and the vertebra holding member 42 has an inner wall portion 42c extending in the longitudinal direction of the wiper blade 30 and against which the connection portion 41f abuts.

[0077] This makes it possible to suppress unnecessary vibration of the wiper device 10 in the direction of the dashed arrow in Fig. 8. Therefore, it is possible to effectively suppress the occurrence of chattering caused by unnecessary vibration.

[0078] Furthermore, the wiper device 10 according to this embodiment can be easily manufactured without increasing the number of parts, which makes it possible to reduce energy consumption involved in manufacturing.

[0079] This will contribute to the UN-led Sustainable Development Goals (SDGs), particularly Goal 7 (Ensure access to affordable, reliable, sustainable and modern energy) and Goal 13 (Take urgent action to combat climate change and its impacts).

[0080] Next, a second embodiment of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those in the first embodiment will be given the same reference numerals, and detailed description thereof will be omitted.

[0081] FIG. 12 is a view corresponding to FIG. 2 showing a wiper device according to a second embodiment, and FIGS. 13(a) and 13(b) are cross-sectional views illustrating the operation of the wiper device according to the second embodiment.

[0082] 12 and 13, the wiper device 60 of the second embodiment differs from the wiper device 10 of the first embodiment (see FIG. 2) in the structure of the tilting mechanism TM2. Specifically, the clip member 61 forming the wiper device 60 has a groove 61a extending straight in the axial direction of the connecting pin 62, and the groove 61a is provided with an engagement recess 61b and an opening 41k. Here, the engagement recess 61b of the second embodiment is not provided with the pin support portion 41m or the pair of tapered portions 41n (see FIG. 2) as in the first embodiment. In other words, the engagement recess 61b extends straight in the axial direction of the connecting pin 62.

[0083] Here, the tilting mechanism TM2 comprises a clip member 61 attached to the U-shaped hook portion 23b of the arm piece 23, a connecting pin 62 to which the clip member 61 is rotatably connected, and a vertebra holding member 42 that supports the blade rubber 50.

[0084] On the other hand, the connecting pin 62 is formed in a roughly barrel shape, with a large-diameter portion 62a having the largest diameter in the longitudinal center portion. Tapered portions 62b are provided on both sides of the large-diameter portion 62a in the longitudinal direction (axial direction) of the connecting pin 62, gradually increasing the gap between the large-diameter portion 62a and the engaging recess 61b as the distance from the large-diameter portion 62a increases. This allows the connecting pin 62 to swing like a seesaw inside the engaging recess 61b, as shown in Figures 12 and 13.

[0085] As described above, in the second embodiment, the shape of the connecting pin 62 and the shape of the engaging recess 61b are reversed compared to the first embodiment (see FIG. 2). Specifically, in the first embodiment, a pair of tapered portions 41n is provided in the engaging recess 41h of the clip member 41, and the connecting pin 42d is formed in a simple cylindrical shape, but in the second embodiment, a pair of tapered portions 62b is provided in the connecting pin 62, and the engaging recess 61b is formed in a shape that extends straight in the axial direction of the connecting pin 62.

[0086] 13(a), when the wiper device 60 is in the forward wiping mode, the tapered portion 62b of the pair of tapered portions 62b of the connecting pin 62 that is on the opposite side to the forward wiping direction (the right side in the figure) abuts against the bottom of the engagement recess 61b. Also, the first inclined surface 41d on the forward wiping direction side (the left side in the figure) abuts against the inner wall portion 42c, and the second inclined surface 41e on the opposite side to the forward wiping direction (the right side in the figure) abuts against the inner wall portion 42c.

[0087] 13(b), when the wiper device 60 is performing backward wiping, the tapered portion 62b of the pair of tapered portions 62b of the connecting pin 62 that is on the side opposite to the backward wiping direction (left side in the figure) abuts against the bottom of the engagement recess 61b. The first inclined surface 41d on the backward wiping direction side (right side in the figure) abuts against the inner wall portion 42c, and the second inclined surface 41e on the side opposite to the backward wiping direction (left side in the figure) abuts against the inner wall portion 42c.

[0088] The wiper device 60 of the second embodiment configured as described above can also achieve substantially the same effects as the wiper device 10 of the first embodiment (see FIG. 2). In addition, in the second embodiment, the shape of the clip member 61 (the shape of the engagement recess 61b) can be made straighter and simpler than in the first embodiment. Therefore, the clip member 61 can be manufactured more easily.

[0089] Next, a third embodiment of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those in the first embodiment will be given the same reference numerals, and detailed description thereof will be omitted.

[0090] FIG. 14 is a view corresponding to FIG. 7 showing the wiper device of the third embodiment, and FIGS. 15(a) and 15(b) are cross-sectional views illustrating the operation of the wiper device of the third embodiment.

[0091] 14 and 15, the wiper device 70 of the third embodiment differs from the wiper device 10 of the first embodiment (see FIG. 2) in the structure of the tilting mechanism. Specifically, the tilting mechanism TM1 of the first embodiment (see FIG. 2) is formed by the clip member 41 and the vertebra holding member 42 that form the rubber holder 40. In contrast, the tilting mechanism TM3 of the third embodiment is formed by the clip member 72, the first support member 73, and the second support member 74 that form the rubber holder 71. In this way, the tilting mechanism TM3 of the third embodiment is also provided on the wiper blade (not shown in detail) as in the first embodiment.

[0092] 14, clip member 72 has engagement recess 72a. Like engagement recess 61b (see FIG. 12) of clip member 61 of embodiment 2, engagement recess 72a does not have pin support portion 41m or a pair of tapered portions 41n (see FIG. 2) as in embodiment 1. In other words, engagement recess 72a simply extends straight in the axial direction of connecting pin 73b.

[0093] Furthermore, the pair of side wall portions 72b forming the clip member 72 do not have the first inclined surface 41d and the second inclined surface 41e (see FIGS. 11 and 13) as in the first and second embodiments. In other words, the outside of the pair of side wall portions 72b is a simple flat surface FS. The rest of the shape of the clip member 72 is the same as in the first and second embodiments.

[0094] The first support member 73 has a pair of pin support walls 73a facing each other in a direction intersecting the longitudinal direction of the rubber holder 71. A connecting pin 73b made of a round steel rod is provided between the pair of pin support walls 73a so as to cross the pair. Here, the connecting pin 73b is also formed in a simple cylindrical shape. That is, unlike in the first and second embodiments, the connecting pin 73b does not oscillate like a seesaw inside the engagement recess 72a.

[0095] A pair of bridging portions 73c are integrally provided between the pair of pin support walls 73a. Specifically, one bridging portion 73c is disposed near the connecting pin 73b, and the other bridging portion 73c is disposed at a position distant from the connecting pin 73b. A substantially cylindrical rotating shaft 73d is integrally provided with each of the pair of bridging portions 73c. ​​These rotating shafts 73d extend in the axial direction of the rubber holder 71 (the left-right direction in FIG. 14). In other words, the axial direction of the rotating shaft 73d and the axial direction of the connecting pin 73b are perpendicular to each other.

[0096] Furthermore, first restricting portions 73e are provided on the second support member 74 side (lower side in FIG. 14) of each pin support wall 73a. The pair of first restricting portions 73e are capable of contacting a pair of second restricting portions 74d provided on the second support member 74. These first and second restricting portions 73e, 74d correspond to inclination angle restricting portions that restrict the maximum inclination angle of the second support member 74 relative to the first support member 73, i.e., the maximum inclination angle of the wiper blade 30 relative to the surface 11a (see FIG. 15).

[0097] The second support member 74 includes a pair of first side members 74a extending in the longitudinal direction of the rubber holder 71, and a pair of second side members 74b connecting the first side members 74a at the longitudinal ends of the first side members 74a. That is, as shown in Fig. 14, the second support member 74 is formed in a substantially rectangular shape with an opening in the center.

[0098] The pair of second side members 74b are each integrally provided with shaft support portions 74c that rotatably support a pair of rotation shafts 73d provided on the first support member 73. This allows the second support member 74 to rotate freely about the rotation shafts 73d relative to the first support member 73. In other words, the second support member 74 is swingable in the wiping direction relative to the first support member 73.

[0099] Further, second restricting portions 74d are provided on the first support member 73 side (upper side in FIG. 14) of the pair of first side members 74a. The pair of second restricting portions 74d are capable of coming into contact with a pair of first restricting portions 73e provided on the first support member 73.

[0100] Here, a pair of vertebras 44 are fixed to the second support member 74 (not shown in detail), and the blade rubber 50 is attached to the pair of vertebras 44 fixed to the second support member 74 (see Figure 15). In other words, the second support member 74 supports the blade rubber 50 via the pair of vertebras 44.

[0101] When the wiper device 70 is wiping on the outward path, the second support member 74 is tilted relative to the first support member 73 around the pivot shaft 73d, and the positional relationship between the center Ct1 of the U-shaped hook portion 23b and the center Ct2 of the rubber blade 50 becomes as shown in Figure 15(a). In other words, the wiper blade 30 is tilted by +α° relative to the surface 11a of the windshield 11 so that the center Ct1 of the U-shaped hook portion 23b moves further forward in the wiping direction (to the left in Figure 15(a)) than the center Ct2 of the rubber blade 50.

[0102] Furthermore, when the wiper device 70 is wiping in the backward direction, the second support member 74 is tilted relative to the first support member 73 around the pivot shaft 73d, and the positional relationship between the center Ct1 of the U-shaped hook portion 23b and the center Ct2 of the rubber blade 50 becomes as shown in Figure 15(b). In other words, the wiper blade 30 is tilted by -α° relative to the surface 11a of the windshield 11 so that the center Ct1 of the U-shaped hook portion 23b moves further forward in the wiping direction (to the right in Figure 15(b)) than the center Ct2 of the rubber blade 50.

[0103] The wiper device 70 of the third embodiment configured as described above can also achieve substantially the same effects as the wiper device 10 of the first embodiment (see FIG. 2). In addition, in the third embodiment, the tilting center (rotation shaft 73d) of the wiper blade 30 relative to the windshield 11 can be positioned closer to the windshield 11 than the connecting pin 73b, compared to the first embodiment. Therefore, the wiper device 70 can be easily applied to a so-called "aero wiper device" having a low height relative to the windshield 11 and a flat design.

[0104] Next, a fourth embodiment of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those in the first embodiment will be given the same reference numerals, and detailed description thereof will be omitted.

[0105] Figure 16 is an oblique view showing a wiper device of embodiment 4, Figure 17 is an exploded oblique view showing the tilting mechanism of the wiper device of Figure 16, and Figures 18(a) and (b) are cross-sectional views along line FF in Figure 16 that explain the operation of the wiper device of embodiment 4.

[0106] 16 to 18, the wiper device 80 of the fourth embodiment differs from the wiper device 10 of the first embodiment (see FIG. 2) in the position where the tilt mechanism is provided and its structure. Specifically, in the first embodiment, the tilt mechanism TM1 (see FIG. 2) is provided on the wiper blade 30, but in the fourth embodiment, the tilt mechanism TM4 is provided on the wiper arm 20. The wiper blade WB shown in FIG. 16 is a normal (general-purpose) wiper blade WB that does not have a tilt mechanism.

[0107] Specifically, in the fourth embodiment, the tilting mechanism TM4 is provided in an arm piece 81 that forms the wiper arm 20. The arm piece 81 includes a first arm member 82 and a second arm member 83, with the first arm member 82 being disposed on the arm shank 22 side (the swing shaft 12 side, see FIG. 1) and the second arm member 83 being disposed on the wiper blade WB side (the U-shaped hook portion 23b side).

[0108] 17, a first connecting member 84 is attached to the first arm member 82 on the side facing the second arm member 83 in the longitudinal direction. The first connecting member 84 is made of a resin material such as plastic, and has a first main body portion 84a that is fixed to the first arm member 82. In addition, a connecting protrusion 84b that is inserted into a connecting hole 85b provided in a second main body portion 85a of the second connecting member 85 is provided integrally with the first main body portion 84a on the side facing the second arm member 83.

[0109] 18, the connecting protrusion 84b includes an insertion body 84c having a substantially circular cross section and an elastic piece 84d that is elastically movable in the radial direction relative to the insertion body 84c. An engaging protrusion 84e that engages with an engaging hole 85c provided near the connecting hole 85b of the second body portion 85a is integrally formed on the elastic piece 84d.

[0110] 17, a second connecting member 85 connected to first connecting member 84 is attached to the first arm member 82 side of second arm member 83 in the longitudinal direction. Second connecting member 85 is made of a resin material such as plastic, and has a second main body portion 85a fixed to second arm member 83. In addition, a connecting hole 85b is provided on the first arm member 82 side of second main body portion 85a, into which a connecting protrusion 84b provided on first main body portion 84a of first connecting member 84 is inserted.

[0111] The connecting protrusion 84b is inserted into the connecting hole 85b without rattling in the radial direction, and the connecting protrusion 84b is able to rotate smoothly relative to the connecting hole 85b. Specifically, the second arm member 83 is able to swing freely relative to the first arm member 82 within a predetermined angular range (±α°) around the connecting hole 85b and the connecting protrusion 84b via the tilting mechanism TM4. In other words, the second connecting member 85 is able to swing in the wiping direction relative to the first connecting member 84. Here, the tilting mechanism TM4 is formed by the first connecting member 84 and the second connecting member 85.

[0112] Here, an engagement hole 85c is provided in communication with the connecting hole 85b, and engages with the engagement protrusion 84e of the elastic piece 84d. The engagement protrusion 84e is fitted into the engagement hole 85c so as to be movable within a predetermined angular range (±α°). Specifically, as shown in FIG. 18, the engagement protrusion 84e is fitted into the engagement hole 85c with a sufficient margin so that the connecting protrusion 84b can swing within an angular range of ±α° relative to the connecting hole 85b. In other words, in this embodiment, the engagement protrusion 84e and the engagement hole 85c correspond to an inclination angle restricting portion that restricts the maximum inclination angle of the second arm member 83 and the wiper blade WB with respect to the surface 11a (see FIG. 16).

[0113] Furthermore, during both the forward wiping and the return wiping of the wiper device 80, the second arm member 83 and the wiper blade WB are tilted by +α° and -α° relative to the first arm member 82 via the tilting mechanism TM4, so that the center of the U-shaped hook portion 23b (see Ct2 in Figure 11) moves further forward in the wiping direction than the center of the blade rubber 50 (see Ct1 in Figure 11), and the second arm member 83 and the wiper blade WB are tilted by +α° and -α° relative to the surface 11a of the windshield 11.

[0114] The wiper device 80 of the fourth embodiment configured as described above can also achieve substantially the same effects as the wiper device 10 of the first embodiment (see FIG. 2). In addition, in the fourth embodiment, compared to the first embodiment, the tilting center (connecting hole 85b and connecting protrusion 84b) of the second arm member 83 and the wiper blade WB relative to the windshield 11 can be positioned on the opposite side of the connecting pin from the windshield 11. In other words, the tilting center of the second arm member 83 and the wiper blade WB relative to the windshield 11 can be moved away from (separated from) the windshield 11. Therefore, the second arm member 83 and the wiper blade WB can be tilted more greatly (±α° or more) relative to the surface 11a of the windshield 11.

[0115] The present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the present invention. For example, in the above-described embodiments, the wiper devices 10, 60, 70, and 80 are used in vehicles such as automobiles, but the present invention is not limited to this, and can also be used in aircraft, railway vehicles, construction machinery, and the like.

[0116] In addition, the material, shape, dimensions, number, installation location, etc. of each component in each of the above-mentioned embodiments are arbitrary as long as they can achieve the present invention, and are not limited to each of the above-mentioned embodiments. [Explanation of symbols]

[0117] 10: wiper device, 11: windshield, 11a: surface (wiping surface), 12: swing shaft, 20: wiper arm, 21: arm head, 21a: swing shaft connecting portion, 21b: shank connecting portion, 21c: pin member, 22: arm shank, 22a: shank base end portion, 22b: shank tip portion, 22c: fixing pin, 23: arm piece, 23a: piece base end portion, 23b: U-shaped hook portion (blade mounting portion), 23c: engagement hole, 23d: side surface, 30: wiper blade, 40: rubber holder, 41: clip member, 41a: clip body, 41b: side wall portion, 41c: Inner flat surface, 41d: first inclined surface (inclination angle regulating portion), 41e: second inclined surface (inclination angle regulating portion), 41f: connecting portion (first abutment portion), 41g: groove portion, 41h: engaging recess, 41k: opening, 41m: pin support portion, 41n: tapered portion, 41p: operating lever, 41s: operating portion, 41t: engaging claw, 42: vertebra holding member (support member), 42a: vertebra holding claw, 42b: pin support wall, 42c: inner wall portion (second abutment portion, inclination angle regulating portion), 42d: connecting pin, 43: holder member, 43a: holder main body, 43b: fin portion, 44: vertebra, 45: end cap, 46: top cover, 46a: first cover claw, 47: bottom cover, 47a: second cover claw, 50: blade rubber, 51: main body, 52: lip portion, 53: neck portion, 60: wiper device, 61: clip member, 61a: groove portion, 61b: engagement recess, 62: connecting pin, 62a: large diameter portion, 62b: tapered portion, 70: wiper device, 71: rubber holder, 72: clip member, 72a: engagement recess, 72b: side wall portion, 73: first support member, 73a: pin support wall, 73b: connecting pin, 73c: bridging portion, 73d: pivot shaft, 73e: first regulating portion (inclination angle angle regulating portion), 74: second support member, 74a: first side member, 74b: second side member, 74c: shaft support portion, 74d: second regulating portion (tilt angle regulating portion), 80: wiper device, 81: arm piece, 82: first arm member, 83: second arm member, 84: first connecting member, 84a: first main body portion, 84b: connecting protrusion, 84c: insertion main body, 84d: elastic piece, 84e: engaging protrusion (tilt angle regulating portion), 85: second connecting member, 85a: second main body portion, 85b: connecting hole, 85c: engaging hole (tilt angle regulating portion), C1: first corner portion, C2: second corner portion, Ct1: center of U-shaped hook portion,Ct2: Center of blade rubber, FS: Flat surface, TM1-TM4: Incline mechanism, WB: Wiper blade,

Claims

1. A wiper device that wipes a wiping surface in accordance with the swinging motion of a swing shaft, a wiper arm having a base end fixed to the swing shaft and a blade mounting portion provided at a tip end; a wiper blade having a blade rubber that is in sliding contact with the wiping surface and is attached to the blade attachment portion; a tilting mechanism provided on the wiper blade for tilting the wiper blade with respect to the wiped surface so that the center of the blade attachment portion is positioned forward in the wiping direction relative to the center of the blade rubber; Equipped with The tilting mechanism includes: a clip member attached to the blade attachment portion; a support member having a connecting pin to which the clip member is rotatably connected and supporting the blade rubber; Equipped with The clip member is an engagement recess into which the connecting pin is engaged; a pair of side wall portions disposed on both sides of the engagement recess in the axial direction of the connecting pin; Equipped with Each of the pair of side wall portions is a first inclined surface facing the support member in the axial direction of the connecting pin; a second inclined surface that faces the support member in the axial direction of the connecting pin and is disposed on the opposite side of the first inclined surface from the wiping surface side; Equipped with When the wiper blade is inclined to one side with respect to the wiping surface, the first inclined surface on one side in the axial direction of the connecting pin abuts against the support member, and the second inclined surface on the other side in the axial direction of the connecting pin abuts against the support member, When the wiper blade is inclined to the other side with respect to the wiping surface, the first inclined surface on the other side in the axial direction of the connecting pin abuts against the support member, and the second inclined surface on one side in the axial direction of the connecting pin abuts against the support member. Wiper device.

2. The wiper device according to claim 1, The connecting pin is inclined in the wiping direction relative to the clip member. Wiper device.

3. The wiper device according to claim 2, a pin support portion that supports a longitudinal center portion of the connecting pin is provided at a longitudinal center portion of the engagement recess, The engaging recess is characterized in that tapered portions are provided on both sides of the pin support portion in the longitudinal direction of the engaging recess, so that the gap between the engaging recess and the connecting pin gradually increases with increasing distance from the pin support portion. Wiper device.

4. The wiper device according to claim 2 or 3, The clip member includes a first abutment portion extending in the longitudinal direction of the wiper blade, The support member extends in the longitudinal direction of the wiper blade and has a second contact portion against which the first contact portion contacts. Wiper device.

Images