JPS63279950A - Wiper device - Google Patents

Abstract

PURPOSE:To make it possible to move a wiper arm rotary shaft so as to obtain a wide wiping area by connecting a rotary gear coupled to the wiper rotary shaft to a rotary gear coupled to a wiper motor through a planetary gear provided on a rotary plate around the rotary shaft of the rotary gear. CONSTITUTION:A rotary plate 5 is attached on the rotary shaft of a first gear engaged with a swingable gear 2 which is coupled to a wiper motor so as to swing reciprocatably by a predetermined angle. A planetary gear 7 is provided on the rotary plate 5 and is engaged with a stationary sun gear 6 at the rotary center of the rotary plate 5, and the gear 7 is also engaged with a second gear 8 coupled to the rotary shaft 9 of a wiper arm 10. The wiper arm 10 is swung around the rotary shaft 9, and the rotary shaft 9 may be moved by a degree corresponding to the degree of rotation of the rotary plate 5 about the stationary sun gear 6, thereby it is possible to obtain a wide wiping area without a complicated telescopic mechanism being used.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明はワイパ装置に係り、特に車両用ワイパ装置の駆
動装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a wiper device, and particularly to a drive device for a wiper device for a vehicle.

〈従来の技術〉 自動車用ワイパー装置には、例えば実開昭５５−１５７
０号公報および特開昭６１−１６９３５５号公報に示す
ように、ワイパアームの揺動過程で該ワイパアームを伸
縮させて、ワイパブレードによる清拭面積を拡大できる
ようにしたものが知られている。この形式のワイパ装置
は例えば第４図に示すように単一のワイパアームをウィ
ンドガラス面Ｇ内でほぼ１８０度往復揺動させる所謂シ
ングルアーム形式のワイパ装置に適用して細実線に示す
従来形式のものに対比して清拭面積を拡大できる。<Prior art> For example, the wiper device for automobiles is
As shown in Japanese Patent No. 0 and Japanese Unexamined Patent Publication No. 61-169355, there are known wiper arms that extend and contract during the swinging process of the wiper arm to enlarge the area wiped by the wiper blade. This type of wiper device is applied, for example, to a so-called single-arm type wiper device in which a single wiper arm is reciprocated by approximately 180 degrees within the windshield surface G, as shown in FIG. The area to be wiped can be expanded compared to conventional products.

〈発明が解決しようとする問題点〉 上述公知の装置はワイパアーム本体を伸縮可能の構造と
しているので、構造が複雑である上に、ワイパアームの
根元部の寸法が伸縮機構を収納するため大となり、運転
者の視界を妨げるなどの問題点がある。<Problems to be Solved by the Invention> The above-mentioned known device has a wiper arm main body that is extendable and retractable, so the structure is complicated, and the base of the wiper arm is large to accommodate the extendable mechanism. There are problems such as obstructing the driver's view.

本発明は、上述問題点を解決する新規なワイパ装置を提
供することを目的とする。An object of the present invention is to provide a novel wiper device that solves the above-mentioned problems.

く問題点を解決するための手段〉 本発明によれば、ワイパモータに連結されて第りの所定
角度往復的に揺動する第１の揺動歯車と、第１の揺ｉＪ
Ｊ歯車に噛み合って第２の所定角度往復的に回動する第
２の歯車と、第２の歯車に連結されて一体的に回弛する
回動板と、第２の歯車に同軸に設けられ静止の取付板に
固定された第３の歯車と１回動板に回動可能に支持され
て第３の歯車に噛み合う第４の歯車と、回動板に回動可
能に支持されて第４の歯車に噛み合って第５の所定角度
往復的に揺動する第５の揺動歯車とを含み、第５の揺動
歯車の軸にワイパアームが連結されているワイパ装置が
提供される。Means for Solving Problems> According to the present invention, a first oscillating gear connected to a wiper motor and reciprocatingly oscillates at a predetermined angle;
a second gear that meshes with the J gear and rotates reciprocally through a second predetermined angle; a rotating plate that is connected to the second gear and rotates integrally with the second gear; and a rotating plate that is provided coaxially with the second gear. a third gear fixed to a stationary mounting plate; a fourth gear rotatably supported by a rotating plate and meshing with the third gear; and a fourth gear rotatably supported by a rotating plate and meshing with the third gear. A wiper device is provided, including a fifth rocking gear that meshes with the gear and swings reciprocally through a fifth predetermined angle, and a wiper arm is connected to the shaft of the fifth rocking gear.

〈作用〉 本発明によれば、ワイパアームの根元部がその揺動に伴
って移動することにより、従来の伸縮方式と同様の効果
を奏するから、従来形式のワイパアームがそのまま使用
可能であり、運転者の視界を妨げることがなく、滑動機
構を含まないから構造が簡単で信頼性が高い。<Function> According to the present invention, the root portion of the wiper arm moves as the wiper arm swings, producing the same effect as the conventional telescoping method. Therefore, the conventional wiper arm can be used as is, and it is convenient for the driver. The structure is simple and highly reliable because it does not obstruct the field of view and does not include a sliding mechanism.

〈実施例〉 以下、本発明の実施例を図面と共に説明する。<Example> Embodiments of the present invention will be described below with reference to the drawings.

第１図、第２図において、１は静止の取付板で、第１の
揺動歯車２を往復的に揺動可能に軸支している。第１の
揺動歯車２は、図示しないロンドを介してワイパモータ
に連結される玉軸受３によって図示実施例では約９０度
の角度範囲で往復的に揺動する。従って第１の揺動歯車
２ばその全周に歯車歯を有する必要が無く、形状も扇形
などであってもよい。第１の揺動歯車２に噛み合う第２
の回動歯車４が取付板１に回動可能に軸支され、約５４
０度の角度範囲で往復的に回動する。第２の回動歯車４
に一体的に連結された回動板５が設けられる。６は第２
の回動歯車４に同軸に取付板１に固定された第３の歯車
である。７は回動板５に回転軸支されて第３の歯車６に
噛み合う第４の歯車である。８は回動板５に回転軸支さ
れて第４の歯車７に噛み合う第５の揺動歯車であり、そ
の往復揺動角度は約１８０度とする。この第５の揺動歯
り」８の場合もその全周に歯車歯を有する必要はない。In FIGS. 1 and 2, reference numeral 1 denotes a stationary mounting plate that pivotally supports a first swing gear 2 so as to be able to swing back and forth. In the illustrated embodiment, the first swing gear 2 swings reciprocally within an angular range of about 90 degrees by a ball bearing 3 connected to the wiper motor via a not-shown iron. Therefore, it is not necessary to have gear teeth around the entire circumference of the first swing gear 2, and the shape may be fan-shaped or the like. The second gear meshing with the first rocking gear 2
A rotating gear 4 of approximately 54 mm is rotatably supported on the mounting plate 1.
It rotates reciprocatingly within the 0 degree angle range. Second rotating gear 4
A rotating plate 5 integrally connected to the rotating plate 5 is provided. 6 is the second
This is a third gear fixed to the mounting plate 1 coaxially with the rotating gear 4 of the figure. A fourth gear 7 is rotatably supported by the rotating plate 5 and meshes with the third gear 6. A fifth rocking gear 8 is rotatably supported by the rotary plate 5 and meshes with the fourth gear 7, and its reciprocating rocking angle is about 180 degrees. In the case of this fifth oscillating gear 8 as well, it is not necessary to have gear teeth around the entire circumference.

歯車６．７，８の歯数は、回動板５の約５４０度の往復
回動によって歯車８の約１８０度の往復揺動が生じるよ
うに定める。第５の揺動歯車８の軸にワイパアーム１０
（根元部のみを示す）のワイパシャフト９が固定される
。The number of teeth of the gears 6, 7, and 8 is determined so that the reciprocating rotation of the rotating plate 5 through approximately 540 degrees causes the reciprocating movement of the gear 8 through approximately 180 degrees. A wiper arm 10 is attached to the shaft of the fifth swing gear 8.
A wiper shaft 9 (only the base part is shown) is fixed.

作動について説明すれば、第３図において、Ａは回動板
５の回転中心すなわち、歯車４の軸線、Ｂ１ないしＢ５
はそれぞれ歯車８の軸線、ＣＩないしＣ５はそれぞれ歯
車８上の基準線の位置（図においては線ＣＢの延長線が
ワイパアームの延長方向を示す）とする。最初に位［Ｂ
ｌ、Ｃ１にあるとし、（第４図実線で示す位置に対応す
る）この位置から回動板５は矢印ＢＯの方向（時計方向
）に回転し、歯車８は矢印Ｃｏ（反時計方向）に回転す
る。位置Ｂ２まで回動板５は約１３５度回転し　＠　＋
ｌ（３は位置Ｃ２までに約４５度回転する。To explain the operation, in FIG. 3, A indicates the center of rotation of the rotating plate 5, that is, the axis of the gear 4, and B1 to B5.
are the axis lines of the gear 8, and CI to C5 are the positions of reference lines on the gear 8 (in the figure, an extension of line CB indicates the direction of extension of the wiper arm). First place [B
From this position (corresponding to the position shown by the solid line in Figure 4), the rotating plate 5 rotates in the direction of arrow BO (clockwise), and the gear 8 rotates in the direction of arrow Co (counterclockwise). Rotate. Rotating plate 5 rotates approximately 135 degrees to position B2 @ +
l(3 rotates approximately 45 degrees by position C2.

このときワイパアームは円Ａの直径りに近い長さを増加
した効果をもつ。つぎに、位置Ｂ３．Ｃ３までに回動板
５は同様に約１３５度回転し、歯車８は同様に約４５度
回転する。ワイパアームは第４図垂直位置をとり、収縮
した長さを有する。同様にして、位置Ｂ４．Ｃ４を経て
最終位置Ｂ５゜Ｃ５に達する。全体として回動板５は約
５４０度回転し、歯車８は位置約１８０度回転する。揺
動歯車の揺動方向が反転して位置は逆順序に変化し、同
一の清拭パターンが得られる。At this time, the wiper arm has the effect of increasing its length close to the diameter of circle A. Next, position B3. By C3, the rotating plate 5 has similarly rotated about 135 degrees, and the gear 8 has also rotated about 45 degrees. The wiper arm assumes the FIG. 4 vertical position and has a retracted length. Similarly, position B4. It reaches the final position B5°C5 via C4. In total, the rotating plate 5 rotates about 540 degrees, and the gear 8 rotates about 180 degrees. The rocking direction of the rocking gear is reversed and the positions change in reverse order, resulting in the same wiping pattern.

なお、第５図は一般的な清拭パターンを示し。Note that FIG. 5 shows a general wiping pattern.

これは高速性が悪い。第４図は本発明によるシングルア
ーム方式の清拭パターンを示し、パターン自体は公知で
ある。This has poor speed. FIG. 4 shows a single-arm wiping pattern according to the present invention, and the pattern itself is known.

図示実施例は例示を目的とするもので、各種の変形が可
能である。往復揺動ないし回動角度は。The illustrated embodiment is for illustrative purposes only, and various modifications are possible. What is the reciprocating swing or rotation angle?

１８０度、５４０度に限定されず、任、なに選択可能で
ある。歯車の配置も図示のものに限定されるものでなく
、例えば内歯歯車なども使用可能である。The angle is not limited to 180 degrees or 540 degrees, and any arbitrary angle can be selected. The arrangement of the gears is not limited to that shown in the drawings, and for example, internal gears can also be used.

〈発明の効果〉 本発明によれば、ワイパアームの根元部がその揺動に伴
って移動することにより、従来の伸縮方式と同様の効果
を奏するから、従来形式のワイパアームがそのまま使用
可能であり、着脱が容易である。運転者の視界な妨げる
ことがなく、滑動機構を含まないから構造が簡単で信頼
性が高く、安価である。<Effects of the Invention> According to the present invention, the root portion of the wiper arm moves as it swings, producing the same effect as the conventional telescoping method, so the conventional wiper arm can be used as is. Easy to put on and take off. It does not obstruct the driver's view, and since it does not include a sliding mechanism, it has a simple structure, high reliability, and low cost.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明によるワイパ装置の部分断面斜視図、第
２図は第１図の装置の側面断面図、第３図は回動板と第
５の歯車との作動時の位置関係を示す上面概略図、第４
図は本発明による清拭パターンを示す図、第５図は従来
の清拭パターンを示す図である。 １：取付板　　　　　２：第１の揺動歯車３：玉軸受　
　　　　４：第２の歯車（回動）５：回動板　　　　　
６：第３の歯車（固定）７：第４の歯車　　　８：第５
の歯車 ９：ワイパシャフｈｌｏ：ワイパアームＡ：回動板の回
動中心（軸） Ｂｌ、１３２．Ｂ３．Ｂ４．＋３５　：第５の歯車の中
心の回動板上の位置 Ｃ１，Ｃ２，Ｃ３，Ｃ／１．Ｃ５：第５の歯車の基準位
置の変化を示す位置 ＢＯ：回動板の回動力向 ＣＯ：第５の歯車の回動方向 特許出願人　　日本ワイパブレード株式会社代理人　　
　　弁理士　　　渡辺龍三部は力叫名Fig. 1 is a partially sectional perspective view of a wiper device according to the present invention, Fig. 2 is a side sectional view of the device of Fig. 1, and Fig. 3 shows the positional relationship between the rotary plate and the fifth gear during operation. Top schematic diagram, 4th
The figure shows a wiping pattern according to the present invention, and FIG. 5 shows a conventional wiping pattern. 1: Mounting plate 2: First rocking gear 3: Ball bearing
4: Second gear (rotation) 5: Rotation plate
6: Third gear (fixed) 7: Fourth gear 8: Fifth gear
Gear 9: Wiper shaft hlo: Wiper arm A: Center of rotation (axis) of rotating plate Bl, 132. B3. B4. +35: Positions C1, C2, C3, C/1 on the rotating plate of the center of the fifth gear. C5: Position indicating a change in the reference position of the fifth gear BO: Direction of rotation of the rotating plate CO: Direction of rotation of the fifth gear Patent applicant: Japan Wiper Blade Co., Ltd. Agent
Patent attorney Ryuzo Watanabe is a powerful name.

Claims (3)

【特許請求の範囲】[Claims] （１）ワイパモータに連結されて第１の所定角度往復的
に揺動する第１の揺動歯車と、第１の揺動歯車に噛み合
って第２の所定角度往復的に回動する第２の歯車と、第
２の歯車に連結されて一体的に回動する回動板と、第２
の歯車に同軸に設けられ静止の取付板に固定された第３
の歯車と、回動板に回動可能に支持されて第３の歯車に
噛み合う第４の歯車と、回動板に回動可能に支持されて
第４の歯車に噛み合って第５の所定角度往復的に揺動す
る第５の揺動歯車とを含み、第５の揺動歯車の軸にワイ
パアームが連結されているワイパー装置。(1) A first oscillating gear connected to the wiper motor and reciprocating through a first predetermined angle, and a second oscillating gear meshing with the first oscillating gear and reciprocating through a second predetermined angle. a gear, a rotating plate connected to the second gear and rotating integrally with the second gear, and a second gear.
A third gear is provided coaxially with the gear and fixed to a stationary mounting plate.
a fourth gear that is rotatably supported by the rotary plate and meshes with the third gear; and a fourth gear that is rotatably supported by the rotary plate and meshes with the fourth gear, and a fifth gear that is rotatably supported by the rotary plate and meshes with the fourth gear. A wiper device including a fifth rocking gear that swings reciprocally, and a wiper arm connected to a shaft of the fifth rocking gear. （２）第５の所定角度が約１８０度である特許請求の範
囲第１項記載のワイパ装置。(2) The wiper device according to claim 1, wherein the fifth predetermined angle is about 180 degrees. （３）第２の所定角度が約５４０度である特許請求の範
囲第２項記載のワイパ装置。(3) The wiper device according to claim 2, wherein the second predetermined angle is about 540 degrees.