JP5839692B2 - Vehicle wiper device - Google Patents
Vehicle wiper device Download PDFInfo
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- JP5839692B2 JP5839692B2 JP2012063951A JP2012063951A JP5839692B2 JP 5839692 B2 JP5839692 B2 JP 5839692B2 JP 2012063951 A JP2012063951 A JP 2012063951A JP 2012063951 A JP2012063951 A JP 2012063951A JP 5839692 B2 JP5839692 B2 JP 5839692B2
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Description
本発明は、車両用ワイパ装置に関するものである。 The present invention relates to a wiper equipment for vehicles.
従来、車両用ワイパ装置としては、車体にピボット軸を回動可能に支持するピボットホルダが固定され、ピボットホルダの下端から突出するピボット軸の基端部に揺動レバーの基端部が固定され、ピボットホルダの上端から突出するピボット軸の先端部にワイパアームが連結されるものがある。揺動レバーは、その先端部がワイパモータにより作動するリンク機構のリンクに連結されて所定角度で揺動し、それと共にピボット軸が回動してワイパアームの払拭動作が行われる。 Conventionally, as a vehicle wiper device, a pivot holder that pivotally supports a pivot shaft is fixed to a vehicle body, and a proximal end portion of a swing lever is fixed to a proximal end portion of the pivot shaft that protrudes from a lower end of the pivot holder. In some cases, a wiper arm is connected to the tip of a pivot shaft protruding from the upper end of the pivot holder. The tip of the swing lever is connected to a link of a link mechanism that is operated by a wiper motor and swings at a predetermined angle. At the same time, the pivot shaft rotates to perform the wiper arm wiping operation.
このような車両用ワイパ装置において、特許文献１では、ワイパアームの先端側が払拭面に対して接離可能となるようにワイパアームの基端部がピボット軸の先端部に回動可能に連結され、ワイパアームと揺動レバーとに直接又は間接的に（伝達部材を介して）付勢部材が係止されたものが開示されている。 In such a vehicle wiper device, in Patent Document 1, the base end portion of the wiper arm is rotatably connected to the distal end portion of the pivot shaft so that the distal end side of the wiper arm can come into contact with and separate from the wiping surface. And an oscillating lever directly or indirectly (via a transmission member) are disclosed.
この車両用ワイパ装置では、ワイパアームと揺動レバーとの間に介在される付勢部材の付勢力によって、ワイパアームを払拭面側に付勢することができるので、ワイパアームの一部を断面コ字状として付勢部材を収容する必要が無く、ワイパアームの形状の自由度を向上させることができる。 In this vehicle wiper device, the wiper arm can be urged toward the wiping surface by the urging force of the urging member interposed between the wiper arm and the swing lever, so a part of the wiper arm has a U-shaped cross section. As a result, it is not necessary to accommodate the biasing member, and the degree of freedom of the shape of the wiper arm can be improved.
しかしながら、上記した車両用ワイパ装置では、ピボットホルダの下側の揺動レバーとピボットホルダの上側のワイパアームとの間に付勢部材や伝達部材を介在させる必要があった。そして、付勢部材や伝達部材はピボット軸と一体的に回動するものであることから、ピボットホルダの周りに大きなスペースが必要となり、車両への搭載性に問題があった。又、付勢部材や伝達部材は、ピボットホルダの下側と上側でそれぞれ係止する必要があるため、組み付け性にも問題があった。 However, in the above-described vehicle wiper device, it is necessary to interpose an urging member and a transmission member between the lower swing lever of the pivot holder and the upper wiper arm of the pivot holder. Since the urging member and the transmission member rotate integrally with the pivot shaft, a large space is required around the pivot holder, and there is a problem in mountability to the vehicle. Further, since the urging member and the transmission member need to be respectively locked at the lower side and the upper side of the pivot holder, there is a problem in assembling property.
本発明は、上記問題点を解決するためになされたものであって、その目的は、ワイパアームの形状の自由度を向上させることができるとともに、車両への搭載性及び組み付け性が良好な車両用ワイパ装置を提供することにある。 The present invention has been made in order to solve the above-described problems, and an object of the present invention is to improve the degree of freedom of the shape of the wiper arm and to improve the mountability and assemblability on the vehicle. It is to provide a wiper equipment.
請求項１に記載の発明では、駆動装置と、前記駆動装置にて往復回動される駆動軸部と、前記駆動軸部を回動可動に支持するピボットホルダと、ワイパアームを主として払拭面側に付勢するための付勢部材を含んで構成されたワイパアーム付勢部材とを備えた車両用ワイパ装置であって、前記ワイパアーム付勢部材は、前記ピボットホルダに対して前記駆動軸部の先端部側に配置され、前記駆動軸部に固定された揺動支持部材と、前記揺動支持部材に前記駆動軸部の回動軸と交差またはねじれの位置関係にある傾動軸中心で傾動可能に支持され、前記ワイパアームを固定するためのワイパ固定部が設けられた傾動部材と、前記揺動支持部材と前記傾動部材との間に支持され前記傾動部材に対して付勢力を付与する前記付勢部材とを有することを要旨とする。 In the first aspect of the invention, the drive device, the drive shaft portion reciprocally rotated by the drive device, the pivot holder that supports the drive shaft portion so as to be rotatable, and the wiper arm mainly on the wiping surface side. And a wiper arm biasing member configured to include a biasing member for biasing, wherein the wiper arm biasing member is at a distal end portion of the drive shaft portion with respect to the pivot holder. A swing support member disposed on the side and fixed to the drive shaft portion, and supported by the swing support member so as to be tiltable about a tilt shaft centered in a positional relationship of intersecting or twisting with the rotation shaft of the drive shaft portion. is a tilting member which wiper fixing portion for fixing the wiper arm is provided, said biasing member for applying a biasing force against the tilting member is supported between said tilting member and the rocking support member that it has a door The gist.
同構成によれば、傾動部材が揺動支持部材に支持されるとともに、付勢部材が前記揺動支持部材と傾動部材との間に支持され前記傾動部材に対して付勢力を付与する構成であるため、ワイパアームを付勢するための部材がワイパアーム付勢部材として集約される。これにより、ワイパアームの一部を断面コ字状として付勢部材を収容する必要が無く、ワイパアームの形状の自由度を向上させることができる。又、ワイパアーム付勢部材を単純に駆動軸部とワイパアームとの間に介在させるだけでワイパアームを付勢することができるため、例えば、駆動軸部を支持するピボットホルダの周りに大きなスペースを必要とせず、車両への搭載性が良好となる。又、例えば、付勢部材等が予め組み付けられたワイパアーム付勢部材を駆動軸部に固定し、そのワイパアーム付勢部材のワイパ固定部にワイパアームを固定することで組み付けが完了するため、付勢部材等をピボットホルダの下側と上側でそれぞれ係止する必要があるもの（従来）に比べて、組み付け性も良好となる。 According to the configuration, the tilting member is supported by the swing support member, a configuration in which the biasing member imparts a biasing force against the tilting member is supported between the swing support member and the tilting member Therefore, members for urging the wiper arm are collected as a wiper arm urging member. Thereby, it is not necessary to accommodate a biasing member with a part of the wiper arm having a U-shaped cross section, and the degree of freedom of the shape of the wiper arm can be improved. Further, since the wiper arm can be biased by simply interposing the wiper arm biasing member between the drive shaft portion and the wiper arm, for example, a large space around the pivot holder that supports the drive shaft portion is required. Therefore, the mounting property to the vehicle is improved. Further, for example, the wiping member is fixed by fixing the wiper arm urging member to which the urging member or the like is assembled in advance to the drive shaft portion, and fixing the wiper arm to the wiper fixing portion of the wiper arm urging member. As compared with the case where the lower part and the upper part of the pivot holder need to be locked (conventional), the assembling property is also improved.
請求項２に記載の発明では、請求項１に記載の車両用ワイパ装置において、前記ワイパアーム付勢部材は、前記揺動支持部材に対する前記傾動部材の傾動角度に応じて前記付勢部材の付勢方向が前記ワイパアームを払拭面側に付勢する状態と前記ワイパアームを起立側に付勢する状態とのいずれかに切り替わるように構成されたことを要旨とする。 According to a second aspect of the present invention, in the vehicle wiper device according to the first aspect, the wiper arm biasing member biases the biasing member according to a tilt angle of the tilting member with respect to the swing support member. The gist is that the direction is switched to either a state in which the wiper arm is urged toward the wiping surface or a state in which the wiper arm is urged toward the standing side.
同構成によれば、傾動部材の傾動角度に応じて付勢部材がワイパアームを払拭面側に付勢する状態とワイパアームを起立側に付勢する状態とのいずれかに切り替わるため、ワイパアーム付勢部材（付勢部材）に所謂ロックバックの機能をも有して集約することができる。よって、付勢力を利用した簡単な構成にてロックバック機能を有するワイパアーム付勢部材を構成したので、部品点数の低減や小型化等を図ることができる。 According to the configuration, the biasing member biases the wiper arm biasing member because the biasing member switches between the state of biasing the wiper arm toward the wiping surface and the state of biasing the wiper arm toward the rising side according to the tilting angle of the tilting member. The (biasing member) can also be integrated with a so-called lockback function. Therefore, since the wiper arm urging member having the lockback function is configured with a simple configuration using the urging force, the number of parts can be reduced and the size can be reduced.
請求項３に記載の発明では、請求項２に記載の車両用ワイパ装置において、前記揺動支持部材には、前記付勢部材が前記ワイパアームを起立側に付勢する状態で予め設定した傾動角度で前記傾動部材と当接してそれ以上の傾動を規制する規制部が形成されたことを要旨とする。 According to a third aspect of the present invention, in the vehicle wiper device according to the second aspect, the swing support member has a tilt angle preset in a state where the biasing member biases the wiper arm to the upright side. The gist of the invention is that a restricting portion that abuts on the tilting member and restricts further tilting is formed.
同構成によれば、付勢部材がワイパアームを起立側に付勢する状態で予め設定した傾動角度で揺動支持部材の規制部が傾動部材と当接してそれ以上の傾動が規制されるため、ワイパアーム付勢部材（揺動支持部材）に所謂ロックバック時の支持機能（ワイパアームの起立姿勢を保持する機能）も集約することができる。よって、ロックバック時に支持する（付勢部材の付勢力を受け止める）部材を別途設ける場合に比べて、部品点数の低減や小型化等を図ることができる。 According to the same configuration, since the restricting portion of the swing support member abuts the tilt member at a tilt angle set in advance in a state where the biasing member biases the wiper arm to the upright side, further tilting is restricted. The wiper arm urging member (swinging support member) can also be integrated with a so-called lockback support function (a function of maintaining the standing posture of the wiper arm). Therefore, the number of parts can be reduced and the size can be reduced as compared with a case where a member (supporting the urging force of the urging member) that is supported at the time of lockback is separately provided.
請求項４に記載の発明では、請求項１乃至３のいずれか１項に記載の車両用ワイパ装置において、前記ワイパ固定部は、その中心軸が前記駆動軸部の回動軸と平行な状態であるとき前記ワイパアームの先端寄りに位置して設けられたワイパ固定軸であることを要旨とする。 According to a fourth aspect of the present invention, in the vehicle wiper device according to any one of the first to third aspects, the wiper fixing portion has a central axis parallel to a rotation axis of the drive shaft portion. The gist of the present invention is that the wiper fixing shaft is located near the tip of the wiper arm.
同構成によれば、ワイパ固定部は、その中心軸が前記駆動軸部の回動軸と平行な状態であるときワイパアームの先端寄りに位置して設けられたワイパ固定軸であるため、ワイパアームの後端部が回動軸よりも大きく後方に突出することを抑えることができ、ワイパアームを起立させた際に必要となる後方のスペースを小さくすることができる。これにより、例えば、車両の内外を隔てるルーバーの孔（ワイパ固定軸を挿通させるルーバーの孔）を小さくすることができる。 According to this configuration, the wiper fixing portion is a wiper fixing shaft that is provided near the tip of the wiper arm when the central axis thereof is parallel to the rotation shaft of the drive shaft portion. It is possible to suppress the rear end portion from protruding rearward larger than the rotation shaft, and the rear space required when the wiper arm is raised can be reduced. Thereby, for example, the hole of the louver that separates the inside and the outside of the vehicle (the hole of the louver through which the wiper fixing shaft is inserted) can be reduced.
請求項５に記載の発明では、請求項１乃至４のいずれか１項に記載の車両用ワイパ装置において、前記ワイパアームは、その長手方向が前記駆動軸部の回動軸方向視で前記ワイパアーム付勢部材の長手方向と同一方向に前記ワイパ固定部に固定されることを要旨とする。 According to a fifth aspect of the present invention, in the vehicle wiper device according to any one of the first to fourth aspects, the wiper arm is attached to the wiper arm when the longitudinal direction of the wiper arm is viewed in the rotational axis direction of the drive shaft portion. The gist is to be fixed to the wiper fixing portion in the same direction as the longitudinal direction of the biasing member.
同構成によれば、ワイパアームの長手方向が駆動軸部の回動軸方向視でワイパアーム付勢部材の長手方向と同一方向になるようにワイパアームがワイパ固定部に固定されているので、ワイパアーム付勢部材の付勢力をワイパアームへの付勢力として効果的に作用させることができる。 According to this configuration, the wiper arm is fixed to the wiper fixing portion so that the longitudinal direction of the wiper arm is in the same direction as the longitudinal direction of the wiper arm urging member as viewed in the rotational axis direction of the drive shaft portion. The biasing force of the member can be effectively applied as the biasing force to the wiper arm.
本発明によれば、ワイパアームの形状の自由度を向上させることができるとともに、車両への搭載性及び組み付け性が良好な車両用ワイパ装置を提供することができる。 According to the present invention, it is possible to it is possible to improve the degree of freedom of the shape of the wiper arm, mountability and assembly of the vehicle to provide a wiper equipment for good vehicle.
以下、本発明を具体化した一実施形態を図１〜図５に従って説明する。
図１に示すように、車両用ワイパ装置は、駆動源としてのモータ１とリンク機構２とからなる駆動装置Ｋとワイパアーム付勢部材Ｆとを備えている。そして、本実施形態の車両用ワイパ装置は、図２に示すように、駆動装置Ｋ及びワイパアーム付勢部材Ｆが、払拭面としてのフロントウィンド３の下方における車両幅方向両端部側にそれぞれ設けられるとともに、それらに連結されたワイパ４（その先端側）が停止位置（最下端位置）において払拭方向（払拭面に平行な方向）に互いに重なって配置されている。即ち、本実施形態の車両用ワイパ装置は、運転席側（図２中、左側）のワイパ４と助手席側（図２中、右側）のワイパ４とが車両幅方向の中心に対して略対称に配置され、運転席側（図２中、左側）のワイパ４の払拭範囲Ｆ１と助手席側（図２中、右側）のワイパ４の払拭範囲Ｆ２とが中央部分で重なるように設けられている。
Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, the vehicle wiper device includes a drive device K including a motor 1 as a drive source and a link mechanism 2 and a wiper arm biasing member F. In the vehicle wiper device of the present embodiment, as shown in FIG. 2, the drive device K and the wiper arm biasing member F are respectively provided at both ends in the vehicle width direction below the front window 3 as a wiping surface. At the same time, the wipers 4 connected to them (the front end side) are arranged so as to overlap each other in the wiping direction (direction parallel to the wiping surface) at the stop position (bottom end position). That is, in the vehicle wiper device of the present embodiment, the wiper 4 on the driver's seat side (left side in FIG. 2) and the wiper 4 on the passenger seat side (right side in FIG. 2) are approximately the center in the vehicle width direction. They are arranged symmetrically, and are provided so that the wiping range F1 of the wiper 4 on the driver's seat side (left side in FIG. 2) and the wiping range F2 of the wiper 4 on the passenger seat side (right side in FIG. 2) overlap at the center portion. ing.
図１及び図３に示すように、モータ１は、モータ本体１１と減速部１２とを備える。モータ本体１１は、図３に示すように、略有底筒状のヨーク１１ａと、ヨーク１１ａ内面に固定された永久磁石（図示略）と、ヨーク１１ａ内に回転可能に支持された回転軸１１ｂと、回転軸１１ｂに固定された電機子コア１１ｃと、電機子コア１１ｃに巻装された巻線（図示略）と、整流子１１ｄ等を有し、回転軸１１ｂを回転駆動する。減速部１２は、前記ヨーク１１ａの開口に固定されたギヤハウジング１２ａと、ギヤハウジング１２ａ内において前記回転軸１１ｂと一体回転するウォーム１２ｂと、ウォーム１２ｂに噛合されるウォームホイール１２ｃと、ギヤハウジング１２ａの外部に突出してウォームホイール１２ｃと一体回転する出力軸１３とを備える。尚、ウォーム１２ｂ及びウォームホイール１２ｃはウォームギヤを構成し、回転軸１１ｂの回転を減速して出力軸１３を回転させる。又、この例のモータ１は、ウォームホイール１２ｃの回動角度を検出可能な図示しないセンサ（例えば、ＭＲセンサ等の磁気抵抗素子）を備え、そのセンサからの検出信号によってウォームホイール１２ｃ及び出力軸１３を１８０°より大きく３６０°未満の予め設定された回動角度範囲（この例では２２０°）で往復回動させることが可能となっている。 As shown in FIGS. 1 and 3, the motor 1 includes a motor body 11 and a speed reduction unit 12. As shown in FIG. 3, the motor body 11 includes a substantially bottomed cylindrical yoke 11a, a permanent magnet (not shown) fixed to the inner surface of the yoke 11a, and a rotating shaft 11b rotatably supported in the yoke 11a. And an armature core 11c fixed to the rotating shaft 11b, a winding (not shown) wound around the armature core 11c, a commutator 11d, and the like, and rotationally drives the rotating shaft 11b. The speed reducer 12 includes a gear housing 12a fixed to the opening of the yoke 11a, a worm 12b that rotates integrally with the rotary shaft 11b in the gear housing 12a, a worm wheel 12c that meshes with the worm 12b, and a gear housing 12a. And an output shaft 13 that projects integrally with the worm wheel 12c. The worm 12b and the worm wheel 12c constitute a worm gear, and reduce the rotation of the rotating shaft 11b to rotate the output shaft 13. The motor 1 of this example also includes a sensor (not shown) that can detect the rotation angle of the worm wheel 12c (for example, a magnetoresistive element such as an MR sensor). 13 can be reciprocated and rotated within a preset rotation angle range of greater than 180 ° and less than 360 ° (220 ° in this example).
リンク機構２は、前記出力軸１３に連結され、前記ワイパアーム付勢部材Ｆが一体回転可能に連結される駆動軸部２１を出力軸１３の回動角度範囲（この例では２２０°）よりも小さい回動角度範囲であって本実施形態では９０°で往復回動させるように設定されている。 The link mechanism 2 is connected to the output shaft 13 and the drive shaft portion 21 to which the wiper arm urging member F is connected so as to be integrally rotatable is smaller than the rotation angle range (220 ° in this example) of the output shaft 13. In this embodiment, the rotation angle range is set to reciprocate at 90 °.
詳しくは、リンク機構２は、図１に示すように、クランク２２と、レバー２３と、ロッド２４とを有する。クランク２２は、その基端部が出力軸１３に固定される。レバー２３は、その先端部に前記駆動軸部２１が一体的に設けられるとともに該駆動軸部２１が前記出力軸１３の軸Ａ１中心と離間した回動軸Ａ２中心に回動可能に支持される。ロッド２４は、その基端部が前記クランク２２の先端部の第１軸Ａ３中心に回転可能に連結されるとともに、その先端部が前記レバー２３の基端部の第２軸Ａ４中心に回転可能に連結される。又、レバー２３（駆動軸部２１）は、前記ギヤハウジング１２ａに固定されるとともに車両に対して固定されることになる取付ブラケット２５に設けられたピボットホルダ２５ａ（図１参照）に回動可能に支持されている。又、本実施形態においてピボットホルダ２５ａの上端より上方に（レバー２３の平坦上面より上方に）突出する駆動軸部２１は、２面幅形状とされるとともに、その平坦面の中央に貫通孔２１ａが形成されている。 Specifically, the link mechanism 2 includes a crank 22, a lever 23, and a rod 24 as shown in FIG. The base end of the crank 22 is fixed to the output shaft 13. The lever 23 is provided with the drive shaft portion 21 integrally at the tip thereof, and the drive shaft portion 21 is rotatably supported around a rotation axis A2 that is separated from the axis A1 center of the output shaft 13. . The rod 24 has a base end portion rotatably connected to the center of the first axis A3 of the tip end portion of the crank 22, and a tip end portion of the rod 24 that can rotate about the second axis A4 of the base end portion of the lever 23. Connected to Further, the lever 23 (drive shaft portion 21) can be rotated by a pivot holder 25a (see FIG. 1) provided on the mounting bracket 25 that is fixed to the gear housing 12a and fixed to the vehicle. It is supported by. Further, in this embodiment, the drive shaft portion 21 protruding above the upper end of the pivot holder 25a (above the flat upper surface of the lever 23) has a two-surface width shape, and has a through hole 21a at the center of the flat surface. Is formed.
ワイパアーム付勢部材Ｆは、図１、図３〜図５に示すように、前記駆動軸部２１に固定される揺動支持部材３１と、揺動支持部材３１に前記駆動軸部２１の回動軸Ａ２と直交する傾動軸Ｂ１中心で傾動可能に支持される傾動部材３２と、揺動支持部材３１に支持され傾動部材３２に付勢力を付与する付勢部材としての圧縮コイルばね３３とを有する。 As shown in FIGS. 1 and 3 to 5, the wiper arm urging member F includes a swing support member 31 fixed to the drive shaft portion 21, and the rotation of the drive shaft portion 21 to the swing support member 31. A tilting member 32 that is supported so as to be tiltable about the tilting axis B1 orthogonal to the axis A2 and a compression coil spring 33 that is supported by the swing support member 31 and that applies a biasing force to the tilting member 32. .
詳しくは、揺動支持部材３１は、図４に示すように、前記駆動軸部２１が内嵌される上下貫通孔３１ａが形成された基部３１ｂを有する。上下貫通孔３１ａは、前記駆動軸部２１を内嵌可能な形状、即ち上下方向から見てその空間が２面幅形状となるように形成されている。又、基部３１ｂは、その外周が上下方向から見て略４角形に形成されている。この基部３１ｂにおいて、前記駆動軸部２１の貫通孔２１ａ（図１参照）と対応した位置（一対の側壁の中央）には第１貫通孔３１ｃが形成されている。そして、揺動支持部材３１は、上下貫通孔３１ａに駆動軸部２１が内嵌され、前記第１貫通孔３１ｃ及び前記貫通孔２１ａに固定ピン（図示略）が嵌挿されることで駆動軸部２１に固定される。又、揺動支持部材３１は、前記基部３１ｂの略４角形の外周において前記第１貫通孔３１ｃが形成された外側面が上方に延長されるように延びる一対の板状上延部３１ｄ（図５参照）を有する。この板状上延部３１ｄにおいて、前記第１貫通孔３１ｃの上方には、第２貫通孔３１ｅが形成されている。 Specifically, as shown in FIG. 4, the swing support member 31 has a base portion 31b in which an upper and lower through hole 31a into which the drive shaft portion 21 is fitted is formed. The upper and lower through holes 31a are formed so that the drive shaft portion 21 can be fitted therein, that is, the space has a two-sided width shape when viewed in the vertical direction. The base 31b has a substantially quadrangular shape when viewed from the top and bottom. In the base portion 31b, a first through hole 31c is formed at a position corresponding to the through hole 21a (see FIG. 1) of the drive shaft portion 21 (center of a pair of side walls). The swing support member 31 has a drive shaft portion 21 fitted in the upper and lower through holes 31a, and a fixed pin (not shown) is inserted into the first through hole 31c and the through hole 21a, thereby driving the drive shaft portion. 21 is fixed. Further, the swing support member 31 has a pair of plate-like upper extending portions 31d (see FIG. 5) extending so that the outer surface on which the first through hole 31c is formed is extended upward on the substantially rectangular outer periphery of the base portion 31b. 5). In the plate-like upper extension portion 31d, a second through hole 31e is formed above the first through hole 31c.
又、揺動支持部材３１は、前記板状上延部３１ｄから側方（上下貫通孔３１ａを中心として径方向外方）であって、詳しくは側方の斜め下方に延びる板状側延部３１ｆを有する。板状側延部３１ｆは、各板状上延部３１ｄから延びることで互いに平行な対をなしている。又、揺動支持部材３１は、前記板状側延部３１ｆの先端同士を繋ぐ板状支持壁３１ｇを有する。この板状支持壁３１ｇの幅方向（図４中、紙面直交方向）中央における下側には板厚方向に貫通するとともに下方に開放するスリット３１ｈが形成されている。又、板状支持壁３１ｇの内側面（板状側延部３１ｆに囲われる側の面）における前記スリット３１ｈの両側には、上方に向かうほど大きく突出する一対の傾斜突部３１ｉが形成されている。この一対の傾斜突部３１ｉは、内側（突出方向）から見て、１つの円形がスリット３１ｈにて分断された形状（図５参照）に形成されている。 Further, the swing support member 31 is a plate-like side extension portion extending laterally from the plate-like upper extension portion 31d (radially outward with respect to the upper and lower through-holes 31a), more specifically, obliquely downward on the side. 31f. The plate-like extending portions 31f extend from the respective plate-like upper extending portions 31d to form a pair parallel to each other. The swing support member 31 has a plate-like support wall 31g that connects the tips of the plate-like side extending portions 31f. A slit 31h that penetrates in the plate thickness direction and opens downward is formed in the lower side of the center of the plate-like support wall 31g in the width direction (the direction orthogonal to the paper surface in FIG. 4). In addition, a pair of inclined protrusions 31i are formed on both sides of the slit 31h on the inner surface of the plate-like support wall 31g (the surface on the side surrounded by the plate-like extension portion 31f). Yes. The pair of inclined protrusions 31i are formed in a shape (see FIG. 5) in which one circle is divided by a slit 31h when viewed from the inside (projection direction).
前記傾動部材３２は、略全体が一対の前記板状上延部３１ｄ間（一部は一対の板状側延部３１ｆ間）に配置される略立方体形状に形成され、前記第２貫通孔３１ｅと対応した位置に軸挿通孔３２ａが形成されている。そして、傾動部材３２は、前記第２貫通孔３１ｅに軸ピン３５が嵌挿されるとともに、該軸ピン３５が軸挿通孔３２ａに第１及び第２ブッシュ３６，３７を介して挿入されることで、前記駆動軸部２１の回動軸Ａ２と直交する傾動軸Ｂ１中心で傾動可能に支持されている。 The tilting member 32 is formed in a substantially cubic shape that is disposed substantially between the pair of plate-like upper extension portions 31d (partially between the pair of plate-like extension portions 31f), and the second through hole 31e. A shaft insertion hole 32a is formed at a position corresponding to. The tilting member 32 is configured such that the shaft pin 35 is inserted into the second through hole 31e, and the shaft pin 35 is inserted into the shaft insertion hole 32a via the first and second bushes 36 and 37. The drive shaft 21 is supported so as to be tiltable about the tilt axis B1 perpendicular to the rotation axis A2.
又、傾動部材３２の上面には、ワイパ４のワイパアーム４ａを固定するためのワイパ固定部としてのワイパ固定軸３８が固定されている。図４（ａ）に示すように、ワイパ固定軸３８は、その中心軸Ａ５が駆動軸部２１の回動軸Ａ２と平行な状態にあるときに見た場合、ワイパアーム４ａの先端寄り（図４（ａ）中、右側）に設けられている。そして、ワイパアーム４ａは、その長手方向Ｘ１（図１参照）が駆動軸部２１の回動軸Ａ２方向視（図３参照）でワイパアーム付勢部材Ｆの長手方向（板状側延部３１ｆが延びる方向）Ｘ２（図１参照）と同一方向になるようにワイパ固定軸３８に固定されることになる。 Further, a wiper fixing shaft 38 as a wiper fixing portion for fixing the wiper arm 4 a of the wiper 4 is fixed to the upper surface of the tilting member 32. As shown in FIG. 4A, the wiper fixing shaft 38 is close to the tip of the wiper arm 4a when the center axis A5 is parallel to the rotation axis A2 of the drive shaft portion 21 (FIG. 4). (A), right side). In the wiper arm 4a, the longitudinal direction X1 (see FIG. 1) of the wiper arm urging member F in the longitudinal direction X1 (see FIG. 1) (see FIG. 3) extends (the plate-like side extension 31f extends). Direction) fixed to the wiper fixing shaft 38 in the same direction as X2 (see FIG. 1).
又、傾動部材３２の前記板状支持壁３１ｇ側の下端部には、前記軸挿通孔３２ａと平行な補助支持部材連結孔３２ｂが形成されている。又、傾動部材３２の前記板状支持壁３１ｇ側の下端部（即ち前記補助支持部材連結孔３２ｂと対応した位置）における幅方向（図４中、紙面直交方向）中央には、側方及び下方に開放するスリット３２ｃが形成されている。そして、傾動部材３２のスリット３２ｃには、略棒状の補助支持部材４１の基端部が収容されるとともに回動可能に支持されている。即ち、補助支持部材４１は、その基端部がスリット３２ｃ内に配置され、前記補助支持部材連結孔３２ｂに軸ピン４２が嵌挿されるとともに、該軸ピン４２が補助支持部材４１の基端部に形成された貫通孔４１ａ（図５参照）に挿入されることで、前記傾動軸Ｂ１と平行な軸Ｂ２中心で回動可能に支持されている。 Further, an auxiliary support member connection hole 32b parallel to the shaft insertion hole 32a is formed at the lower end of the tilting member 32 on the plate-like support wall 31g side. Further, in the center in the width direction (in the direction orthogonal to the paper surface in FIG. 4) at the lower end of the tilting member 32 on the plate-like support wall 31g side (that is, the position corresponding to the auxiliary support member connecting hole 32b) A slit 32c is formed so as to open to the surface. The slit 32c of the tilting member 32 accommodates the proximal end portion of the substantially rod-shaped auxiliary support member 41 and is rotatably supported. That is, the base end portion of the auxiliary support member 41 is disposed in the slit 32 c, the shaft pin 42 is fitted into the auxiliary support member connecting hole 32 b, and the shaft pin 42 is the base end portion of the auxiliary support member 41. By being inserted into a through-hole 41a (see FIG. 5) formed in, it is supported so as to be rotatable about an axis B2 parallel to the tilt axis B1.
補助支持部材４１は、その先端側が前記板状支持壁３１ｇのスリット３１ｈを貫通するようにその長さが設定されている、又、補助支持部材４１の基端側には、その長尺直交方向に突出する一対の受け部４１ｂが形成されている。そして、前記板状支持壁３１ｇと前記補助支持部材４１の受け部４１ｂとの間には、圧縮コイルばね３３が圧縮された状態で前記補助支持部材４１に外嵌（遊嵌）されつつ配置される。尚、本実施形態では、受け部４１ｂと圧縮コイルばね３３との間に環状ワッシャ４３が介在され、圧縮コイルばね３３に受け部４１ｂから局部的な力（付勢力の反力）が掛からないようにされている。又、本実施形態では、まず補助支持部材４１の先端側がスリット３１ｈ内に配置されていない状態で圧縮コイルばね３３を補助支持部材４１に外嵌し、圧縮コイルばね３３を圧縮しつつ補助支持部材４１を回動させてその先端側をスリット３１ｈ内に挿入し、圧縮コイルばね３３が前記傾斜突部３１ｉを乗り越えて嵌るようにして組み付けを行っている。又、圧縮コイルばね３３は、上記のように組み付けられた状態で、一対の板状側延部３１ｆ間に配置され、側方から見て板状側延部３１ｆに略覆われることになる。 The length of the auxiliary support member 41 is set so that the distal end side thereof penetrates the slit 31h of the plate-like support wall 31g, and the proximal end side of the auxiliary support member 41 has a longitudinal orthogonal direction. A pair of receiving portions 41b projecting from each other is formed. And between the plate-like support wall 31g and the receiving part 41b of the auxiliary support member 41, the compression coil spring 33 is compressed and arranged on the auxiliary support member 41 while being externally fitted (freely fitted). The In the present embodiment, an annular washer 43 is interposed between the receiving portion 41b and the compression coil spring 33 so that a local force (reaction force of the biasing force) is not applied to the compression coil spring 33 from the receiving portion 41b. Has been. In the present embodiment, first, the compression coil spring 33 is externally fitted to the auxiliary support member 41 in a state where the distal end side of the auxiliary support member 41 is not disposed in the slit 31h, and the auxiliary support member 41 is compressed while compressing the compression coil spring 33. 41 is rotated and the front end side thereof is inserted into the slit 31h, and the compression coil spring 33 is fitted over the inclined protrusion 31i. Further, the compression coil spring 33 is disposed between the pair of plate-like side extension portions 31f in the assembled state as described above, and is substantially covered with the plate-like side extension portion 31f when viewed from the side.
これにより、圧縮コイルばね３３は、揺動支持部材３１の板状支持壁３１ｇに支持され、補助支持部材４１を介して傾動部材３２に付勢力を付与する。この圧縮コイルばね３３の付勢方向は、揺動支持部材３１に対する傾動部材３２の傾動角度に応じてワイパアーム４ａを払拭面（前記フロントウィンド３）側に付勢する状態（図４（ａ）参照）とワイパアーム４ａを起立側に付勢する状態（図４（ｂ）参照）とのいずれかに切り替わる。詳しくは、図４（ａ）に示すように、圧縮コイルばね３３の支持中心Ｚから補助支持部材４１の軸Ｂ２方向に向かう付勢力Ｆａが、圧縮コイルばね３３の支持中心Ｚと傾動部材３２の傾動軸Ｂ１とを通る直線Ｌよりも下方に向かう状態では、ワイパアーム４ａを払拭面側に付勢する方向（図４（ａ）中、時計回り方向）に傾動部材３２を付勢する。又、図４（ｂ）に示すように、圧縮コイルばね３３の支持中心Ｚから補助支持部材４１の軸Ｂ２方向に向かう付勢力Ｆｂが、圧縮コイルばね３３の支持中心Ｚと傾動部材３２の傾動軸Ｂ１とを通る直線Ｌよりも上方に向かう状態では、ワイパアーム４ａを起立側に付勢する方向（図４（ｂ）中、反時計回り方向）に傾動部材３２を付勢する。 Thereby, the compression coil spring 33 is supported by the plate-like support wall 31 g of the swing support member 31 and applies a biasing force to the tilting member 32 via the auxiliary support member 41. The biasing direction of the compression coil spring 33 is a state in which the wiper arm 4a is biased toward the wiping surface (the front window 3) according to the tilting angle of the tilting member 32 with respect to the swing support member 31 (see FIG. 4A). ) And the state in which the wiper arm 4a is urged to the upright side (see FIG. 4B). Specifically, as shown in FIG. 4A, the biasing force Fa from the support center Z of the compression coil spring 33 toward the axis B <b> 2 of the auxiliary support member 41 causes the support center Z of the compression coil spring 33 and the tilting member 32 to move. In a state of being directed downward from a straight line L passing through the tilting axis B1, the tilting member 32 is biased in a direction in which the wiper arm 4a is biased toward the wiping surface (clockwise direction in FIG. 4A). 4B, the biasing force Fb from the support center Z of the compression coil spring 33 toward the axis B2 of the auxiliary support member 41 causes the support center Z of the compression coil spring 33 and the tilting member 32 to tilt. In a state of being directed upward from the straight line L passing through the axis B1, the tilting member 32 is urged in a direction in which the wiper arm 4a is urged upward (counterclockwise direction in FIG. 4B).
又、ここで、図４（ｂ）に示すように、揺動支持部材３１には、圧縮コイルばね３３がワイパアーム４ａを起立側に付勢する状態で予め設定した傾動角度で傾動部材３２と当接してそれ以上の傾動を規制する規制部３１ｊが形成されている。本実施形態の規制部３１ｊは、前記基部３１ｂにおいて上下貫通孔３１ａ及び板状上延部３１ｄを除く上面に形成されている。又、本実施形態の規制部３１ｊは、前記ワイパ固定軸３８の中心軸Ａ５が駆動軸部２１の回動軸Ａ２と平行な状態（図４（ａ）参照）から約３０°傾動した角度で傾動部材３２の下面と当接するように傾斜角度が設定されている。 Here, as shown in FIG. 4B, the swing support member 31 is brought into contact with the tilt member 32 at a preset tilt angle in a state where the compression coil spring 33 biases the wiper arm 4a to the upright side. A restricting portion 31j that contacts and restricts further tilting is formed. The restriction portion 31j of the present embodiment is formed on the upper surface of the base portion 31b excluding the upper and lower through holes 31a and the plate-like upper extension portion 31d. Further, the restricting portion 31j of the present embodiment has an angle tilted by about 30 ° from the state in which the central axis A5 of the wiper fixing shaft 38 is parallel to the rotation axis A2 of the drive shaft portion 21 (see FIG. 4A). The tilt angle is set so as to contact the lower surface of the tilt member 32.
次に上記のように構成された車両用ワイパ装置の作用について説明する。
例えば、モータ１が駆動されると、出力軸１３が２２０°の回動角度範囲で往復回動され、その出力軸１３と共にクランク２２が往復回動される。すると、クランク２２からロッド２４を介してレバー２３に動力が伝達され、レバー２３の駆動軸部２１と共にワイパアーム付勢部材Ｆ及びワイパ４（ワイパアーム４ａ）が９０°の回動角度範囲で一体的に往復回動され、払拭動作が行われる。
Next, the operation of the vehicle wiper device configured as described above will be described.
For example, when the motor 1 is driven, the output shaft 13 is reciprocated within a rotation angle range of 220 °, and the crank 22 is reciprocated together with the output shaft 13. Then, power is transmitted from the crank 22 to the lever 23 via the rod 24, and the wiper arm biasing member F and the wiper 4 (wiper arm 4a) together with the drive shaft portion 21 of the lever 23 are integrally formed within a rotation angle range of 90 °. It is reciprocated and a wiping operation is performed.
又、このとき、図４（ａ）に示すように、圧縮コイルばね３３の支持中心Ｚから補助支持部材４１の軸Ｂ２方向に向かう付勢力Ｆａが、圧縮コイルばね３３の支持中心Ｚと傾動部材３２の傾動軸Ｂ１とを結ぶ直線Ｌよりも下方に向かう状態（即ち軸Ｂ２が直線Ｌよりも下方側にある状態）では、ワイパアーム４ａを払拭面側に付勢する方向（図４（ａ）中、時計回り方向）に傾動部材３２が付勢される。よって、上記のようにワイパ４（ワイパアーム４ａ）が９０°の回動角度範囲で往復回動されるときワイパ４が払拭面形状に倣って上下動しても、軸Ｂ２が直線Ｌよりも下方側にある状態が維持されるように設定されており、ワイパ４は払拭面に適切に押圧されて良好に払拭する。 At this time, as shown in FIG. 4A, the biasing force Fa from the support center Z of the compression coil spring 33 in the direction of the axis B2 of the auxiliary support member 41 causes the support center Z of the compression coil spring 33 and the tilting member to move. In a state of being directed downward from a straight line L connecting 32 tilting axes B1 (that is, a state in which the shaft B2 is below the straight line L), the wiper arm 4a is biased toward the wiping surface (FIG. 4A). The tilting member 32 is biased in the clockwise direction. Therefore, when the wiper 4 (wiper arm 4a) is reciprocally rotated within the rotation angle range of 90 ° as described above, the axis B2 is below the straight line L even if the wiper 4 moves up and down following the wiping surface shape. The wiper 4 is properly pressed against the wiping surface and wipes well.
そして、例えば、モータ１の停止状態において作業者等がワイパ４（ワイパアーム４ａ）を持ち上げると、図４（ｂ）に示すように、軸Ｂ２が直線Ｌよりも上方側にある状態に切り替り、ワイパアーム４ａを起立側に付勢する方向（図４（ｂ）中、反時計回り方向）に傾動部材３２が圧縮コイルばね３３によって付勢され、前記予め設定した傾動角度で規制部３１ｊに傾動部材３２が当接してその状態（起立状態）が保持される。 Then, for example, when an operator or the like lifts the wiper 4 (wiper arm 4a) while the motor 1 is stopped, the shaft B2 is switched to a state above the straight line L as shown in FIG. The tilting member 32 is biased by the compression coil spring 33 in the direction in which the wiper arm 4a is biased to the standing side (counterclockwise direction in FIG. 4B), and the tilting member is tilted to the restricting portion 31j at the preset tilt angle. 32 abuts and the state (standing state) is maintained.
次に、上記実施の形態の特徴的な効果を以下に記載する。
（１）傾動部材３２が揺動支持部材３１に支持されるとともに、圧縮コイルばね３３が揺動支持部材３１に支持され傾動部材３２に付勢力を付与する構成であるため、ワイパアーム４ａ（ワイパ４）を付勢するための部材がワイパアーム付勢部材Ｆとして集約される。これにより、ワイパアーム４ａの一部を断面コ字状として付勢部材（圧縮コイルばね）を収容する必要が無く、ワイパアーム４ａの形状の自由度を向上させることができる。又、ワイパアーム付勢部材Ｆを単純に駆動軸部２１とワイパアーム４ａとの間に介在させるだけでワイパアーム４ａを付勢することができるため、例えば、駆動軸部２１を支持するピボットホルダ２５ａの周りに大きなスペースを必要とせず、車両への搭載性が良好となる。又、例えば、圧縮コイルばね３３等が予め組み付けられたワイパアーム付勢部材Ｆを駆動軸部２１に固定し、そのワイパアーム付勢部材Ｆのワイパ固定軸３８にワイパアーム４ａを固定することで組み付けが完了するため、付勢部材等をピボットホルダの下側と上側でそれぞれ係止する必要があるもの（従来）に比べて、組み付け性も良好となる。
Next, the characteristic effects of the above embodiment will be described below.
(1) Since the tilting member 32 is supported by the swing support member 31 and the compression coil spring 33 is supported by the swing support member 31 and applies a biasing force to the tilt member 32, the wiper arm 4a (wiper 4) ) Is gathered as a wiper arm urging member F. Thereby, it is not necessary to accommodate a biasing member (compression coil spring) with a part of the wiper arm 4a having a U-shaped cross section, and the degree of freedom of the shape of the wiper arm 4a can be improved. Further, since the wiper arm 4a can be biased simply by interposing the wiper arm biasing member F between the drive shaft 21 and the wiper arm 4a, for example, around the pivot holder 25a that supports the drive shaft 21. Thus, a large space is not required, and the mountability to the vehicle is improved. Further, for example, the wiper arm biasing member F preliminarily assembled with the compression coil spring 33 or the like is fixed to the drive shaft portion 21, and the wiper arm 4a is fixed to the wiper fixing shaft 38 of the wiper arm biasing member F to complete the assembly. Therefore, the assembling property is also improved as compared with the case where the urging member or the like needs to be locked at the lower side and the upper side of the pivot holder (conventional).
（２）傾動部材３２の傾動角度に応じて圧縮コイルばね３３の付勢方向がワイパアーム４ａを払拭面側に付勢する状態とワイパアーム４ａを起立側に付勢する状態とのいずれかに切り替わるため、ワイパアーム付勢部材Ｆ（圧縮コイルばね３３）に所謂ロックバックの機能をも有して集約することができる。よって、付勢力を利用した簡単な構成にてロックバック機能を有するワイパアーム付勢部材Ｆを構成したので、部品点数の低減や小型化等を図ることができる。 (2) The biasing direction of the compression coil spring 33 is switched between the state in which the wiper arm 4a is biased toward the wiping surface and the state in which the wiper arm 4a is biased toward the standing side according to the tilting angle of the tilting member 32. The wiper arm urging member F (compression coil spring 33) can be integrated with a so-called lockback function. Therefore, since the wiper arm urging member F having the lockback function is configured with a simple configuration using the urging force, the number of parts can be reduced and the size can be reduced.
（３）圧縮コイルばね３３がワイパアーム４ａを起立側に付勢する状態で予め設定した傾動角度で揺動支持部材３１の規制部３１ｊが傾動部材３２と当接してそれ以上の傾動が規制されるため、ワイパアーム付勢部材Ｆ（揺動支持部材３１）に所謂ロックバック時の支持機能（ワイパアーム４ａの起立姿勢を保持する機能）も集約することができる。よって、ロックバック時に支持する（付勢部材の付勢力を受け止める）部材を別途設ける場合に比べて、部品点数の低減や小型化等を図ることができる。 (3) The restricting portion 31j of the swing support member 31 contacts the tilt member 32 at a tilt angle set in advance with the compression coil spring 33 biasing the wiper arm 4a to the upright side, and further tilting is restricted. Therefore, a so-called lockback support function (a function of maintaining the standing posture of the wiper arm 4a) can be integrated into the wiper arm urging member F (the swing support member 31). Therefore, the number of parts can be reduced and the size can be reduced as compared with a case where a member (supporting the urging force of the urging member) that is supported at the time of lockback is separately provided.
（４）ワイパ固定軸３８は、その中心軸Ａ５が駆動軸部２１の回動軸Ａ２と平行な状態であるとき（回動軸Ａ２よりも）ワイパアーム４ａの先端寄り（図４（ａ）中、右側）に位置して設けられる。よって、ワイパアーム４ａの後端部が回動軸よりも大きく後方に突出することを抑えることができ、ワイパアーム４ａを起立させた際に必要となる後方のスペースを小さくすることができる。これにより、例えば、図４（ｂ）に示すように、車両の内外を隔てるルーバー５１の孔５１ａ（ワイパ固定軸３８を挿通させるルーバー５１の孔５１ａ）を小さくすることができる。 (4) The wiper fixing shaft 38 is closer to the tip of the wiper arm 4a when the center axis A5 is parallel to the rotation axis A2 of the drive shaft portion 21 (than the rotation axis A2) (in FIG. 4A). , Right side). Therefore, it is possible to suppress the rear end portion of the wiper arm 4a from protruding rearward larger than the rotation shaft, and the rear space required when the wiper arm 4a is raised can be reduced. Thereby, for example, as shown in FIG. 4B, the hole 51a of the louver 51 separating the inside and the outside of the vehicle (the hole 51a of the louver 51 through which the wiper fixing shaft 38 is inserted) can be reduced.
（５）ワイパアーム４ａは、その長手方向Ｘ１が駆動軸部２１の回動軸Ａ２方向視でワイパアーム付勢部材Ｆの長手方向Ｘ２と同一方向にワイパ固定軸３８に固定されるので、言い換えると、ワイパアーム４ａの長手方向Ｘ１が駆動軸部２１の回動軸Ａ２方向視でワイパアーム付勢部材Ｆの長手方向Ｘ２と同一方向になるようにワイパアーム４ａがワイパ固定軸３８に固定されているので、ワイパアーム付勢部材Ｆの付勢力をワイパアーム４ａへの付勢力として効果的に作用させることができる。 (5) Since the longitudinal direction X1 of the wiper arm 4a is fixed to the wiper fixing shaft 38 in the same direction as the longitudinal direction X2 of the wiper arm urging member F when viewed in the direction of the rotation axis A2 of the drive shaft portion 21, in other words, Since the wiper arm 4a is fixed to the wiper fixing shaft 38 so that the longitudinal direction X1 of the wiper arm 4a is in the same direction as the longitudinal direction X2 of the wiper arm urging member F when viewed in the direction of the rotation axis A2 of the drive shaft portion 21, The urging force of the urging member F can be effectively applied as the urging force to the wiper arm 4a.
上記実施形態は、以下のように変更してもよい。
・上記実施形態では、傾動部材３２の傾動角度に応じて圧縮コイルばね３３の付勢方向がワイパアーム４ａを払拭面側に付勢する状態とワイパアーム４ａを起立側に付勢する状態とのいずれかに切り替わる構成としたが、これに限定されず、例えば、圧縮コイルばね（付勢部材）は単にワイパアーム４ａを払拭面側にのみ付勢する構成としてもよい。
The above embodiment may be modified as follows.
In the above embodiment, either the state in which the urging direction of the compression coil spring 33 urges the wiper arm 4a toward the wiping surface or the state in which the wiper arm 4a is urged toward the standing side according to the tilting angle of the tilting member 32. However, the present invention is not limited to this. For example, the compression coil spring (biasing member) may be configured to simply urge the wiper arm 4a only on the wiping surface side.
・上記実施形態では、揺動支持部材３１には、予め設定した傾動角度で傾動部材３２と当接してそれ以上の傾動を規制する規制部３１ｊが形成されるとしたが、これに限定されず、例えば、規制部３１ｊが形成されていない揺動支持部材としてもよい。又、勿論、規制部３１ｊが規制する前記傾動角度は変更してもよい。 In the above embodiment, the swing support member 31 is formed with the restricting portion 31j that contacts the tilt member 32 at a preset tilt angle and restricts further tilting. However, the present invention is not limited to this. For example, it is good also as a rocking | fluctuation support member in which the control part 31j is not formed. Of course, the tilt angle regulated by the regulating part 31j may be changed.
・上記実施形態では、ワイパ固定軸３８は、その中心軸Ａ５が駆動軸部２１の回動軸Ａ２と平行な状態にあるときに見た場合、（回動軸Ａ２よりも）ワイパアーム４ａの先端寄り（図４（ａ）中、右側）に位置して設けられるとしたが、これに限定されず、例えば、前記中心軸Ａ５が前記回動軸Ａ２と一致するように設けてもよい。又、ワイパ固定軸３８は、ワイパアーム４ａの基端部を固定することができれば、円柱状の軸でなくてもよく、例えば固定片とする等、他のワイパ固定部に変更してもよい。又、ワイパ固定部は、傾動部材３２に一体成形してもよい。 In the above embodiment, the wiper fixing shaft 38 has the tip of the wiper arm 4a (more than the rotation axis A2) when the center axis A5 is parallel to the rotation axis A2 of the drive shaft portion 21. Although it is provided to be located closer to the right side (in FIG. 4A), the present invention is not limited to this. For example, the center axis A5 may be provided so as to coincide with the rotation axis A2. Further, the wiper fixing shaft 38 may not be a cylindrical shaft as long as the base end portion of the wiper arm 4a can be fixed, and may be changed to another wiper fixing portion such as a fixed piece. Further, the wiper fixing portion may be integrally formed with the tilting member 32.
・上記実施形態では、揺動支持部材３１に駆動軸部２１の回動軸Ａ２と傾動部材３２の傾動軸Ｂ１とは直交（交差）するものであるとしたが、回動軸Ａ２と傾動軸Ｂ１とが交差したものではなく垂直な（互いに９０°を成した）ねじれの位置関係にあるものとしてもよい。また、回動軸Ａ２と傾動軸Ｂ１とが垂直（互いに９０°）を成したものではなく傾斜した位置関係であってもよい。 In the above-described embodiment, the pivot axis A2 of the drive shaft 21 and the tilt axis B1 of the tilt member 32 are orthogonal to (intersect) the swing support member 31, but the pivot axis A2 and tilt axis B1 may not be crossed but may be in a vertical (90 ° mutually) twisted positional relationship. Further, the rotational axis A2 and the tilting axis B1 may not be perpendicular (90 ° to each other) but may be tilted.
・上記実施形態では、ワイパアーム付勢部材Ｆは、補助支持部材４１を有した構成としたが、付勢部材（圧縮コイルばね３３）を同様に作用させることができれば、例えば、補助支持部材４１を他の構成としてもよいし、削除してもよい。又、付勢部材（圧縮コイルばね３３）を揺動支持部材３１に支持させる構成（板状支持壁３１ｇや傾斜突部３１ｉ等）においても、同様に支持させることができれば他の構成に変更してもよい。 In the above embodiment, the wiper arm urging member F has the auxiliary support member 41. However, if the urging member (compression coil spring 33) can be similarly applied, for example, the auxiliary support member 41 is provided. Other configurations may be used, or they may be deleted. Also, in the configuration (plate-like support wall 31g, inclined protrusion 31i, etc.) in which the urging member (compression coil spring 33) is supported by the swing support member 31, the configuration can be changed to another configuration if it can be supported in the same manner. May be.
・上記実施形態では、駆動装置Ｋは、フロントウィンド３の下方における車両幅方向両端部側にそれぞれ設けられるとともに、ワイパ４が停止位置において払拭方向に互いに重なって配置されるものであるとしたが、これに限定されず、例えば、停止位置においても２つのワイパ４が払拭方向に互いに重ならない車両用ワイパ装置としてもよい。 In the above embodiment, the driving device K is provided on both ends in the vehicle width direction below the front window 3, and the wipers 4 are arranged to overlap each other in the wiping direction at the stop position. However, the present invention is not limited to this. For example, a vehicle wiper device in which the two wipers 4 do not overlap each other in the wiping direction even at the stop position may be used.
・上記実施形態では、駆動装置Ｋは、モータ１とリンク機構２とからなるとしたが、これに限定されず、リンク機構２を備えずモータ１が直接駆動軸部を駆動する、即ち出力軸１３が駆動軸部となる駆動装置に変更してもよい。 In the above embodiment, the driving device K is composed of the motor 1 and the link mechanism 2. However, the present invention is not limited to this, and the motor 1 directly drives the drive shaft portion without the link mechanism 2, that is, the output shaft 13. May be changed to a drive device serving as a drive shaft portion.
３…フロントウィンド（払拭面）、４ａ…ワイパアーム、２１…駆動軸部、３１…揺動支持部材、３１ｊ…規制部、３２…傾動部材、３３…圧縮コイルばね（付勢部材）、３８…ワイパ固定軸（ワイパ固定部）、Ｆ…ワイパアーム付勢部材、Ｋ…駆動装置、Ａ２…駆動軸部の回動軸、Ａ５…ワイパ固定軸（ワイパ固定部）の中心軸、Ｂ１…傾動部材の傾動軸、Ｆａ，Ｆｂ…付勢力、Ｘ１，Ｘ２…長手方向。 DESCRIPTION OF SYMBOLS 3 ... Front window (wiping surface), 4a ... Wiper arm, 21 ... Drive shaft part, 31 ... Swing support member, 31j ... Restriction part, 32 ... Tilt member, 33 ... Compression coil spring (biasing member), 38 ... Wiper Fixed shaft (wiper fixing portion), F ... wiper arm biasing member, K ... driving device, A2 ... rotating shaft of driving shaft portion, A5 ... central axis of wiper fixing shaft (wiper fixing portion), B1 ... tilting of tilting member Axes, Fa, Fb ... biasing force, X1, X2 ... longitudinal direction.
Claims (5)
前記駆動装置にて往復回動される駆動軸部と、
前記駆動軸部を回動可動に支持するピボットホルダと、
ワイパアームを主として払拭面側に付勢するための付勢部材を含んで構成されたワイパアーム付勢部材とを備えた車両用ワイパ装置であって、
前記ワイパアーム付勢部材は、
前記ピボットホルダに対して前記駆動軸部の先端部側に配置され、前記駆動軸部に固定された揺動支持部材と、
前記揺動支持部材に前記駆動軸部の回動軸と交差またはねじれの位置関係にある傾動軸中心で傾動可能に支持され、前記ワイパアームを固定するためのワイパ固定部が設けられた傾動部材と、
前記揺動支持部材と前記傾動部材との間に支持され前記傾動部材に対して付勢力を付与する前記付勢部材と
を有することを特徴とする車両用ワイパ装置。 A driving device;
A drive shaft reciprocally rotated by the drive device;
A pivot holder that rotatably supports the drive shaft;
A wiper device for a vehicle comprising a wiper arm biasing member configured to include a biasing member for biasing the wiper arm mainly toward the wiping surface,
The wiper arm biasing member is
A swing support member disposed on the distal end side of the drive shaft portion with respect to the pivot holder and fixed to the drive shaft portion;
Wherein a tiltably supported in tilting axis center in the the intersection or skewed positional relationship between the drive shaft portion of the rotating shaft to the swing support member, and a tilting member which wiper fixing portion for fixing the wiper arm is provided ,
The vehicle wiper apparatus characterized by being supported to have a said biasing member for applying a biasing force against the tilting member between the swing support member and the tilting member.
前記ワイパアーム付勢部材は、前記揺動支持部材に対する前記傾動部材の傾動角度に応じて前記付勢部材の付勢方向が前記ワイパアームを払拭面側に付勢する状態と前記ワイパアームを起立側に付勢する状態とのいずれかに切り替わるように構成されたことを特徴とする車両用ワイパ装置。 The vehicle wiper device according to claim 1,
The wiper arm urging member urges the wiper arm toward the wiping surface when the urging direction of the urging member urges the wiper arm toward the wiping surface according to the tilt angle of the tilt member with respect to the swing support member. A wiper device for a vehicle, wherein the wiper device is configured to be switched to any one of the states to be energized.
前記揺動支持部材には、前記付勢部材が前記ワイパアームを起立側に付勢する状態で予め設定した傾動角度で前記傾動部材と当接してそれ以上の傾動を規制する規制部が形成されたことを特徴とする車両用ワイパ装置。 The vehicle wiper device according to claim 2,
The swing support member is formed with a restricting portion that contacts the tilting member at a tilt angle set in advance in a state where the biasing member biases the wiper arm to the upright side and restricts further tilting. A vehicle wiper device.
前記ワイパ固定部は、その中心軸が前記駆動軸部の回動軸と平行な状態であるとき前記ワイパアームの先端寄りに位置して設けられたワイパ固定軸であることを特徴とする車両用ワイパ装置。 The vehicle wiper device according to any one of claims 1 to 3,
The wiper fixing portion is a wiper fixing shaft provided near a tip of the wiper arm when a central axis thereof is parallel to a rotation axis of the drive shaft portion. apparatus.
前記ワイパアームは、その長手方向が前記駆動軸部の回動軸方向視で前記ワイパアーム付勢部材の長手方向と同一方向に前記ワイパ固定部に固定されることを特徴とする車両用ワイパ装置。 The vehicle wiper device according to any one of claims 1 to 4,
The wiper device for a vehicle according to claim 1, wherein the wiper arm is fixed to the wiper fixing portion in the same direction as the longitudinal direction of the wiper arm urging member as viewed in the rotational axis direction of the drive shaft portion.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012063951A JP5839692B2 (en) | 2012-03-21 | 2012-03-21 | Vehicle wiper device |
| CN201310070786.XA CN103318138B (en) | 2012-03-21 | 2013-03-06 | Vehicle wiper device |
| DE102013102265.0A DE102013102265B4 (en) | 2012-03-21 | 2013-03-07 | Vehicle wiper device |
| US13/831,607 US8857007B2 (en) | 2012-03-21 | 2013-03-15 | Vehicle wiper device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012063951A JP5839692B2 (en) | 2012-03-21 | 2012-03-21 | Vehicle wiper device |
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| Publication Number | Publication Date |
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| JP2013193602A JP2013193602A (en) | 2013-09-30 |
| JP5839692B2 true JP5839692B2 (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2012063951A Expired - Fee Related JP5839692B2 (en) | 2012-03-21 | 2012-03-21 | Vehicle wiper device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9327686B2 (en) | 2013-07-09 | 2016-05-03 | Asmo Co., Ltd. | Vehicle wiper device |
| JP6365266B2 (en) * | 2014-11-27 | 2018-08-01 | 株式会社デンソー | Wiper arm biasing member and vehicle wiper device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007314053A (en) * | 2006-05-26 | 2007-12-06 | Asmo Co Ltd | Wiper arm and wiper device |
| JP2008094376A (en) * | 2006-09-13 | 2008-04-24 | Asmo Co Ltd | Wiper arm and vehicular wiper |
| JP4796005B2 (en) * | 2007-04-25 | 2011-10-19 | アスモ株式会社 | Wiper device |
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| JP2013193602A (en) | 2013-09-30 |
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