JPH0281750A - Wiper device for vehicle - Google Patents
Wiper device for vehicleInfo
- Publication number
- JPH0281750A JPH0281750A JP63234483A JP23448388A JPH0281750A JP H0281750 A JPH0281750 A JP H0281750A JP 63234483 A JP63234483 A JP 63234483A JP 23448388 A JP23448388 A JP 23448388A JP H0281750 A JPH0281750 A JP H0281750A
- Authority
- JP
- Japan
- Prior art keywords
- wiper
- urging force
- spring
- wiper arm
- biasing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 30
- 239000011521 glass Substances 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/34—Wiper arms; Mountings therefor
- B60S1/3411—Wiper arms; Mountings therefor with means for varying wiper-blade pressure on windshield during operation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は車両のワイパー装置に関し、特にウィンド面の
各部におけるワイパーアームの付勢力を均一化するとと
もに、車速等の外部からの制御信号に応じてワイパーア
ームの付勢力を可変させるようにしたものに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wiper device for a vehicle, and in particular, it equalizes the biasing force of the wiper arm at each part of the windshield surface and responds to external control signals such as vehicle speed. This invention relates to a device in which the biasing force of a wiper arm can be varied.
一般に、ウィンド面を払拭して降雨時等の視界を良好に
保つための車両のワイパー装置では、ウィンドパネル周
辺近くに回転自在に設けらたピボット軸の先端にワイパ
ーアームを取付け、このワイパーアームの先端部にウィ
ンド面を払拭するワイパーブレードを設け、ワイパーア
ームを付勢バネでウィンド面に弾性付勢しつつピボット
軸を中心にして扇状に往復運動させ、ワイパーブレード
を所定の押圧力でウィンド面に当接させてウィンド面を
払拭するようにしである。Generally, in a vehicle wiper device that wipes the windshield surface to maintain good visibility during rain, a wiper arm is attached to the tip of a pivot shaft that is rotatably installed near the periphery of the wind panel. A wiper blade is installed at the tip to wipe the windshield surface, and the wiper arm is elastically biased against the windshield surface by a biasing spring and reciprocated in a fan-like manner around the pivot shaft, so that the wiper blade wipes the windshield surface with a predetermined pressing force. It is designed to wipe the window surface by touching it.
上記ワイパー装置では、ワイパーアームが付勢バネによ
り付勢されているので、高速走行時にフロントガラス上
の気流によりワイパーアームが浮き上がり、ワイパーブ
レードの押圧力が低下してウィンド面を円滑に払拭でき
ないことがある。このため、例えば特開昭５５−１６０
６３７号公報には、車速に応じて付勢バネを伸縮させて
その弾性付勢力を可変させ、高速走行時でも最適の押圧
力でワイパーブレードを当接させて払拭出来るように構
成したものが記載されている。In the above wiper device, the wiper arm is biased by a biasing spring, so when driving at high speed, the wiper arm lifts due to the airflow on the windshield, reducing the pressing force of the wiper blade and making it impossible to wipe the windshield surface smoothly. There is. For this reason, for example, JP-A-55-160
Publication No. 637 describes a structure in which a biasing spring is expanded and contracted according to the vehicle speed to vary its elastic biasing force, so that even when driving at high speed, the wiper blade can be brought into contact with the optimal pressing force to wipe the vehicle. has been done.
通常、車両のワイパー装置では、ワイパーアームに取付
けられたワイパーブレードをウィンド面に摺接させて払
拭する関係上、ワイパーアームの付勢力が強過ぎれば柔
軟なワイパープレートが横倒しになって払拭能力が低下
し、摩耗及び変形が激しく所要動力も大きくなり、また
逆に弱過ぎれ１ば払拭能力が低下して払拭残りが生じる
ため、常に最適な付勢力で付勢することが要求される。Normally, in a vehicle's wiper device, the wiper blade attached to the wiper arm slides against the windshield surface, so if the biasing force of the wiper arm is too strong, the flexible wiper plate will fall sideways and the wiping ability will be reduced. If the force is too weak, the wiping force decreases, causing severe wear and deformation, and the required power becomes large.On the other hand, if it is too weak, the wiping ability decreases and residual wiping remains, so it is necessary to always apply the optimum force.
上記公報に記載のワイパー装置では１．車速の変化に応
じてワイパーアームの付勢力を可変出来るので、高速走
行時でも最適な付勢力を維持出来るが、ウィンド面は３
次元曲面に形成されており、しかも近年デザイン上の要
求からその曲率が大きくなる傾向があるので、ウィンド
面の各部においてワイパーアームの付勢力が変動して払
拭能力が低下するという問題がある。In the wiper device described in the above publication, 1. Since the biasing force of the wiper arm can be varied according to changes in vehicle speed, the optimal biasing force can be maintained even when driving at high speed, but the windshield surface
It is formed into a dimensional curved surface, and the curvature has tended to increase in recent years due to design requirements, so there is a problem that the biasing force of the wiper arm fluctuates in each part of the window surface, reducing the wiping ability.
発明の目的は、ウィンド面の各部におけるワイパーアー
ムの付勢力を均一化するとともに、車速等の外部からの
制御信号に応じてワイパーアームの付勢力を可変させ、
常に最適な付勢力でウィンド面を払拭し得る車両のワイ
パー装置を提供することにある。The purpose of the invention is to equalize the biasing force of the wiper arm in each part of the windshield surface, and to vary the biasing force of the wiper arm in accordance with external control signals such as vehicle speed.
To provide a wiper device for a vehicle capable of always wiping a windshield surface with optimum biasing force.
〔課題を解決するための手段］
本発明に係る車両のワイパー装置は、ワイパーブレード
が取付けられたワイパーアームをウィンド面に弾性付勢
する付勢手段と、上記付勢手段の付勢力を可変に操作す
る操作機構と、上記ワイパーアームのピボット軸に軸方
向移動可能で且つ回転拘束に取付けられ、操作機構の従
動入力部に当接しワイパーアームの払拭運動に応動して
付勢手段の付勢力が均一化するように操作機構を操作す
るカム面が形成されたスペーサ部材と、上記スペーサ部
材を軸方向に駆動する駆動手段と、上記駆動手段を外部
からの制御信号に基いて制御する制御手段とを備えたも
のである。[Means for Solving the Problems] A wiper device for a vehicle according to the present invention includes a biasing device for elastically biasing a wiper arm to which a wiper blade is attached toward a windshield surface, and a biasing force of the biasing device that is variable. An operating mechanism is attached to the pivot shaft of the wiper arm so as to be movable in the axial direction and is rotationally restrained, and comes into contact with a driven input portion of the operating mechanism so that the biasing force of the biasing means is applied in response to the wiping movement of the wiper arm. a spacer member formed with a cam surface for operating an operating mechanism to achieve uniformity; a driving means for driving the spacer member in an axial direction; and a control means for controlling the driving means based on an external control signal. It is equipped with the following.
（作用）
本発明に係る車両のワイパー装置においては、ワイパー
ブレードが取付けられたワイパーアームが付勢手段によ
りウィンド面に弾性付勢され、この付勢手段の付勢力が
操作機構により可変に操作されるようになっており、操
作機構の従動入力部が、ワイパーアームのピボット軸に
軸方向移動可能で且つ回転拘束に取付けられたスペーサ
部材のカム面に当接し、ワイパーアームの払拭運動に応
動して操作されることにより、ワイパーアームを均一な
付勢力でもってウィンド面に弾性付勢する。(Function) In the vehicle wiper device according to the present invention, the wiper arm to which the wiper blade is attached is elastically urged toward the window surface by the urging means, and the urging force of the urging means is variably operated by the operating mechanism. The driven input part of the operating mechanism contacts the cam surface of a spacer member that is movable in the axial direction on the pivot axis of the wiper arm and is attached to a rotational restraint, and responds to the wiping movement of the wiper arm. By operating the wiper arm, the wiper arm is elastically biased against the window surface with a uniform biasing force.
また、スペーサ部材は、外部からの制御信号に暴いて制
御手段で制御される駆動手段により軸方向に駆動され、
カム面で従動入力部を操作して払拭運動の全域に亙って
付勢力を均一に調整する。Further, the spacer member is driven in the axial direction by a drive means controlled by a control means in response to an external control signal,
By operating the driven input section on the cam surface, the biasing force is adjusted uniformly over the entire area of the wiping motion.
上記のように、払拭運動に応動して操作機構が操作され
、付勢手段の付勢力が均一化されるので、簡単な構成の
スペーサ部材と操作機構で付勢手段の付勢力を可変に操
作して、比較的曲率の大きいウィンド面でも最適な付勢
力で均一に払拭できる。As mentioned above, the operating mechanism is operated in response to the wiping motion, and the biasing force of the biasing means is made uniform, so the biasing force of the biasing means can be variably operated using the simple spacer member and the operating mechanism. Therefore, even a wind surface with a relatively large curvature can be wiped uniformly with an optimal biasing force.
また、車速等の外部からの制御信号に応じて付勢手段の
付勢力を調整出来るので、車両の走行状態に応じた最適
な付勢力で払拭できる。Further, since the urging force of the urging means can be adjusted according to an external control signal such as the vehicle speed, it is possible to wipe with the optimum urging force depending on the running condition of the vehicle.
本発明に係る車両のワイパー装置によれば、以上説明し
たように、比較的曲率の大きいウィンド面でも均一化さ
れた最適な付勢力で払拭できるので、ウィンド面の所定
部分においで付勢力が低下して払拭残りが生じたり、ワ
イパーブレードに無理な押圧力が作用して摩耗や変形が
促進されたりすることを防止出来る。しかも、付勢力の
均一化は、払拭運動のための駆動力でスペーサ部材と操
作機構を操作して行うので、付勢力均一化の為の構成を
簡単化出来る。According to the vehicle wiper device according to the present invention, as explained above, even a windshield surface with a relatively large curvature can be wiped with a uniform and optimal biasing force, so that the biasing force is reduced in a predetermined portion of the windshield surface. It is possible to prevent the wiper blade from being left behind after wiping, or from applying excessive pressure to the wiper blade, which accelerates wear and deformation. Moreover, since the biasing force is made uniform by operating the spacer member and the operating mechanism using the driving force for the wiping motion, the configuration for uniformizing the biasing force can be simplified.
外部からの制御信号として車速信号を用いることにより
、車両の走行状態に応じた最適な付勢力で払拭できるの
で、高速走行時には付勢力を高めてウィンド面上の気流
による付勢力の低下を防止出来る。By using the vehicle speed signal as an external control signal, it is possible to wipe the vehicle with an optimal biasing force depending on the driving condition of the vehicle, so when driving at high speeds, the biasing force can be increased and the biasing force can be prevented from decreasing due to airflow on the window surface. .
（実施例〕 以下、本発明の実施例を図面に基いて説明する。(Example〕 Embodiments of the present invention will be described below with reference to the drawings.
本実施例は、自動車のフロントガラスを払拭するワイパ
ー装置に本発明を適用した場合のものである。In this embodiment, the present invention is applied to a wiper device for wiping the windshield of an automobile.
第１図・第２図に示すように、自動車１０車体前部のボ
ンネット２の後方にはその中央部が前方へ突出した所定
曲率の湾曲形状に形成されたフロントガラス３が設けら
れ、フロントガラス３の前端下部にはオーブンカウル型
カウルボックス４が車幅方向に設けられ、ボンネット２
はカウルボックス４の上方へ延びその後端部とフロント
ガラス３の前端部間には開口部５が形成され、カウルボ
ックス４には開口部５を挿通してフロントガラス３の上
側へ延びる１対のワイパーアーム６を備えたワイパー装
置７が設けられている。As shown in FIGS. 1 and 2, a windshield 3 is provided at the rear of a bonnet 2 at the front of an automobile 10 and is formed into a curved shape with a predetermined curvature with its central portion protruding forward. An oven cowl type cowl box 4 is provided at the lower front end of the bonnet 2 in the vehicle width direction.
A pair of openings 5 are formed between the rear end of the cowl box 4 and the front end of the windshield 3. A wiper device 7 with a wiper arm 6 is provided.
上記カウルボックス４は、第２図に示すように、フロン
トガラス３の前端近傍部の下方において鉛直方向向きに
設けられた鉛直部８ａと鉛直部８ａの下端部から前方へ
略水平に延びる水平部８ｂとからなるダッシュアッパパ
ネル８と、水平部８ｂの前端部に立設固着され上方へ延
びるカウルフロントパネル９と、鉛直部８ａの上端部に
固着されフロントガラス３と略平行に斜め前方へ延びる
カウルアウタパネル１０とから構成され、フロントガラ
ス３の前端縁部はカウルアウタパネル１０の後端上部に
ポリウレタン等のシーラ部材１１で接着されている。As shown in FIG. 2, the cowl box 4 includes a vertical portion 8a provided vertically below a portion near the front end of the windshield 3, and a horizontal portion extending substantially horizontally forward from the lower end of the vertical portion 8a. 8b, a cowl front panel 9 that is erected and fixed to the front end of the horizontal part 8b and extends upward, and a cowl front panel 9 that is fixed to the upper end of the vertical part 8a and extends diagonally forward approximately parallel to the windshield 3. The front edge of the windshield 3 is bonded to the upper rear end of the cowl outer panel 10 with a sealer member 11 such as polyurethane.
上記ワイパー装置７は、第２図〜第５図に示すように、
その先端部にフロントガラス３に当接するワイパーブレ
ード１２が取付けられた１対のワイパーアーム６と、各
ワイパーアーム６を夫々所定角度往復回動駆動する払拭
駆動機構と、ワイパーアーム６をフロントガラス３に弾
性付勢する付勢バネ１４と、付勢バネ１４の付勢力を可
変に操作する操作機構１５と、操作機構１５の従動人力
レバー１６の前端の従動入力部１６ａに当接しワイパー
アーム６の払拭運動に応動して付勢バネ１４の付勢力が
均一化するように操作機構１５を操作するカム面１７が
形成されたスペーサ部材１８と、スペーサ部材１８を軸
方向に駆動する駆動機構１９と、駆動機構１９を車速信
号に基いて制御する制御装置２０とを備えている。The wiper device 7, as shown in FIGS. 2 to 5,
A pair of wiper arms 6 each having a wiper blade 12 attached to its tip that contacts the windshield 3, a wiping drive mechanism that drives each wiper arm 6 to reciprocate by a predetermined angle, and a wiper arm 6 that moves the wiper arm 6 to the windshield 3. a biasing spring 14 that elastically biases the wiper arm 6; an operating mechanism 15 that variably operates the biasing force of the biasing spring 14; A spacer member 18 formed with a cam surface 17 that operates the operating mechanism 15 so that the biasing force of the biasing spring 14 becomes uniform in response to the wiping motion, and a drive mechanism 19 that drives the spacer member 18 in the axial direction. , and a control device 20 that controls the drive mechanism 19 based on a vehicle speed signal.
上記払拭駆動機構について説明すると、第１図〜第５図
に示すように、カウルアウタパネル１０の車幅方向の略
中央部及び左端近傍部には挿通孔１０ａが形成され、挿
通孔１０ａには略円筒状のガイドスリーブ２１が挿通さ
れ、ガイドスリーブ２１はその途中部に形成された鍔部
２１ａにおいてカウルアウタパネル１０の下端面にボル
ト２２で固着され、ガイドスリーブ２１にはピボット軸
２３がベアリング２４及び受部材２５を介して回転可能
で且つ軸方向に移動不能に挿通され、ピボット軸２３の
上端部にはワイパーアーム６がその基端部において固着
され、ピボット軸２３の下端部はリンクレバー２６及び
リンクロッド２７を介してワイパーモータ（図示路）に
接続され、ワイパーアーム６はワイパーモータの駆動に
より第１図に実線で図示の払拭開始位置から仮想線で図
示の払拭終了位置に亙って往復払拭運動する。To explain the above-mentioned wiping drive mechanism, as shown in FIGS. 1 to 5, an insertion hole 10a is formed in the approximate center and left end of the cowl outer panel 10 in the vehicle width direction; A cylindrical guide sleeve 21 is inserted, and the guide sleeve 21 is fixed to the lower end surface of the cowl outer panel 10 with a bolt 22 at a flange 21a formed in the middle thereof. The wiper arm 6 is inserted through the receiving member 25 so as to be rotatable and immovable in the axial direction, and the wiper arm 6 is fixed at its base end to the upper end of the pivot shaft 23, and the link lever 26 and the lower end of the pivot shaft 23 are fixed to the upper end of the pivot shaft 23. It is connected to a wiper motor (path shown) via a link rod 27, and the wiper arm 6 is driven by the wiper motor to reciprocate from a wiping start position shown by a solid line in FIG. 1 to a wiping end position shown by a phantom line. Do a cleansing campaign.
上記ワイパーアーム６は、ピボット軸２３の上端部に固
着されたアームヘッド２日と、アームヘッド２８の先端
部にその幅方向向きのピン部材２９を介して揺動可能に
連結されたリテーナ３０と、リテーナ３０の先端部に固
着されたアームピース３１とを備えた一般的な構成のも
のである。The wiper arm 6 includes an arm head 2 fixed to the upper end of the pivot shaft 23, and a retainer 30 swingably connected to the tip of the arm head 28 via a pin member 29 extending in the width direction. , and an arm piece 31 fixed to the tip of a retainer 30.
上記ワイパーブレード１２は、アームピース３１の先端
部にその幅方向向きのピン部材３２を介して揺動可能に
連結されたブレード金具３３と、プレート金具３３に取
付けられフロントガラス３の下端近傍部から上端近傍部
に亙って摺接可能なブレードラバー３４とを備えた一般
的な構成のものであり、アームピース３１の先端部に作
用する付勢力はブレード金具３３の複数のレバ一部材３
３ａによりブレードラバー３４に均一に配分されるよう
になっている。The wiper blade 12 includes a blade metal fitting 33 that is swingably connected to the tip of the arm piece 31 via a pin member 32 extending in the width direction, and a blade metal fitting 33 that is attached to the plate metal fitting 33 and extends from the vicinity of the lower end of the windshield 3. It has a general configuration including a blade rubber 34 that can be slid over the vicinity of the upper end, and the biasing force acting on the tip of the arm piece 31 is caused by the plurality of lever members 3 of the blade fitting 33.
3a ensures uniform distribution on the blade rubber 34.
上記付勢バネ１４はリテーナ３０の下側に配設され、ワ
イパーアーム６をフロントガラス３に弾性付勢するため
の引張コイルバネで、その先端部はリテーナ３０の先端
近傍下部に連結され、基端部は後述の操作リンク３５の
先端部に連結フック３６を介して連結され、リテーナ３
０は付勢バネ１４の付勢力によりピン部材２９を中心に
してフロントガラス３側への回動方向に付勢され、アー
ムピース３１及びブレード金具３３を介してブレードラ
バー３４を所定の付勢力でフロントガラス３に押圧する
。The biasing spring 14 is a tension coil spring disposed below the retainer 30 to elastically bias the wiper arm 6 against the windshield 3, and its distal end is connected to the lower part near the distal end of the retainer 30, and its proximal end The retainer 3 is connected to the tip of an operation link 35, which will be described later, via a connecting hook 36.
0 is biased in the direction of rotation toward the windshield 3 around the pin member 29 by the biasing force of the biasing spring 14, and the blade rubber 34 is biased with a predetermined biasing force via the arm piece 31 and the blade metal fitting 33. Press it against the windshield 3.
上記操作機構１５は付勢バネ１４を伸縮させてその付勢
力を可変に操作するためのもので、アームベツド２８の
基端近傍部には下方へ延びる１対のブラケット２８ａが
形成され、両ブラケット２８ａ間にはアームヘッド２８
の幅方向向きのピン部材３７が架着され、ピン部材３７
の途中部には逆り字状の従動入力レバー１６がその中段
部において回動可能に枢支され、従動入力レバー１６の
上端部はアームヘッド２８の収容部３８内に配設された
操作リンク３５の基端部に連結され、操作リンク３５の
先端部は連結フック３６を介して付勢バネ１４の基端部
に連結され、従動入力レバー１６は付勢バネ１４により
常に時計方向に付勢されその前端の従動入力部１６ａは
スペーサ部材１８のカム面１７に当接され、払拭駆動時
に従動入力レバー１６がワイパーアーム６とともにピボ
ット軸２３を中心に回動駆動されると、従動入力レバー
１６の前端部がカム面１７に摺接してピン部材３７を中
心に揺動操作され、付勢バネ１４がワイパーアーム６の
払拭運動に応動して伸縮されてその付勢力が可変される
。The operating mechanism 15 is for variably operating the biasing force by expanding and contracting the biasing spring 14. A pair of brackets 28a extending downward are formed near the base end of the arm bed 28, and both brackets 28a Arm head 28 between
A pin member 37 oriented in the width direction is mounted, and the pin member 37
An inverted-shaped driven input lever 16 is rotatably supported at the middle part thereof, and the upper end of the driven input lever 16 is connected to an operation link disposed in the housing part 38 of the arm head 28. 35, and the distal end of the operation link 35 is connected to the base end of the biasing spring 14 via a connecting hook 36, and the driven input lever 16 is always biased clockwise by the biasing spring 14. The driven input portion 16a at the front end is brought into contact with the cam surface 17 of the spacer member 18, and when the driven input lever 16 is rotated about the pivot shaft 23 together with the wiper arm 6 during wiping drive, the driven input lever 16 is rotated about the pivot shaft 23. The front end portion of the wiper arm 6 slides on the cam surface 17 and is operated to swing around the pin member 37, and the biasing spring 14 is expanded and contracted in response to the wiping movement of the wiper arm 6, thereby varying its biasing force.
上記スペーサ部材１８は略円錐台状の筒状部材からなり
、ガイドスリーブ２１の上部にキー４０を介して軸方向
移動可能で且つ回転拘束に装着され、その外周部に形成
されたテーパ状のカム面１７の所定中段部に従動入力レ
バー１６の従動入力部１６ａが当接される。The spacer member 18 is a cylindrical member having a substantially truncated conical shape, and is attached to the upper part of the guide sleeve 21 via a key 40 so as to be movable in the axial direction and to be rotationally restrained, and has a tapered cam formed on its outer periphery. A driven input portion 16a of the driven input lever 16 is brought into contact with a predetermined middle portion of the surface 17.
上記カム面１７の形状は、従動入力レバー１６を揺動操
作して付勢バネ１４の付勢力を均一化するため、次のよ
うに設定されている。The shape of the cam surface 17 is set as follows in order to uniformize the biasing force of the biasing spring 14 by swinging the driven input lever 16.
第６図は、払拭開始位置から払拭終了位置までのワーイ
パーアーム６の払拭角α（本実施例では０°から８０°
）と、ピボット軸２３の軸心方向に対するリテーナ３０
の傾斜角θとの関係を示す線図で、フロントガラス３が
所定の曲率で湾曲状に形成されているためワーイパーア
ーム６の払拭角αに対するリテーナ３０の傾斜角θは曲
線にで示すようなカーブを描く。リテーナ３０の傾斜角
θの変動により、払拭運動時に付勢バネエ４が伸縮され
、ワイパーアーム６の払拭角αに対する付勢バネ１４の
付勢力ｇが、第７図に示すように、曲線にと略同じカー
ブの曲線Ｐを描く。ここで、付勢バネ１４の最適な付勢
力は直線Ｐ１で示すものであり、付勢力が直線Ｐｌにな
るように付勢バネ１４を伸縮させて補正量Ｑだけ付勢力
を補正する必要がある。このため、カム面１７は払拭角
θに対応させてピボット軸２３の軸心からカム面１７ま
での距離！（カム半径）が、第８図に示すように、直線
Ｐ１を中心に曲線Ｐを線対称したものと略同じカーブの
曲線に１を描くように形成されている。FIG. 6 shows the wiping angle α (from 0° to 80° in this embodiment) of the wiper arm 6 from the wiping start position to the wiping end position.
) and the retainer 30 in the axial direction of the pivot shaft 23
In this diagram, the windshield 3 is formed into a curved shape with a predetermined curvature, so the inclination angle θ of the retainer 30 with respect to the wiping angle α of the wiper arm 6 is as shown in the curve. Draw a curve. Due to the variation in the inclination angle θ of the retainer 30, the biasing spring 4 is expanded and contracted during the wiping movement, and the biasing force g of the biasing spring 14 relative to the wiping angle α of the wiper arm 6 is curved as shown in FIG. Draw a curve P that is approximately the same curve. Here, the optimal biasing force of the biasing spring 14 is shown by the straight line P1, and it is necessary to correct the biasing force by the correction amount Q by expanding and contracting the biasing spring 14 so that the biasing force becomes the straight line P1. . Therefore, the distance between the cam surface 17 and the cam surface 17 from the axis of the pivot shaft 23 corresponds to the wiping angle θ! As shown in FIG. 8, the (cam radius) is formed so as to draw 1 on a curve that is substantially the same as the curve P that is symmetrical about the straight line P1.
上記駆動機構１９は、スペーサ部材１８をピボット軸２
３の軸心方向に駆動して付勢バネ１４の付勢力を払拭運
動の全範囲に亙って一律に増減調節するためのもので、
第５図に示すように、スペーサ部材１８の下方でガイド
スリーブ２１には第１歯車４１が装着され、第１歯車４
１はスペーサ部材２１をその上端面において摺動可能に
支持するとともにガイドスリーブ２１の中段部に形成さ
れた雄ネジ２１ｂに回転可能に螺合され、鍔部２１ａの
前端近傍部には駆動モータ４２がその回転駆動軸４２ａ
を上下方向向きにして設けられ、回転駆動軸４２ａの上
端部には第１歯車４１と噛合する第２歯車４３が固着さ
れ、駆動モータ４２により第２歯車４３を介して第１歯
車４１が回転駆動されると、第１歯車４１とスペーサ部
材１８がガイドスリーブ２１の軸心方向に駆動され、カ
ム面１７で従動入力レバー１６が揺動駆動されて付勢バ
ネ１４の付勢力が調節される。尚、上記駆動モータ４２
はパルスモータなどからなり、制御装置２０からの駆動
パルスに応じて所定角度ずつ回転駆動軸４２ａを回転駆
動するようになっている。The drive mechanism 19 moves the spacer member 18 to the pivot shaft 2.
3 to uniformly increase or decrease the biasing force of the biasing spring 14 over the entire range of the wiping motion.
As shown in FIG. 5, a first gear 41 is attached to the guide sleeve 21 below the spacer member 18.
1 slidably supports the spacer member 21 on its upper end surface, and is rotatably screwed into a male thread 21b formed in the middle part of the guide sleeve 21, and a drive motor 42 is provided near the front end of the flange 21a. is its rotational drive shaft 42a
A second gear 43 that meshes with the first gear 41 is fixed to the upper end of the rotary drive shaft 42a, and the first gear 41 is rotated by the drive motor 42 via the second gear 43. When driven, the first gear 41 and the spacer member 18 are driven in the axial direction of the guide sleeve 21, the driven input lever 16 is driven to swing by the cam surface 17, and the biasing force of the biasing spring 14 is adjusted. . Note that the drive motor 42
is composed of a pulse motor or the like, and is configured to rotate the rotary drive shaft 42a by a predetermined angle in response to drive pulses from the control device 20.
上記制御装置２０は、第５図に示すように、車速センサ
４４からの車速信号を受けて駆動モータ４２へ駆動パル
スを出力し、付勢バネ１４の付勢力を車速に応じた最適
なものに制御する。尚、上記制御装置２０は、マイクロ
コンピュータを備えた一般的な構成のものなのでその詳
細な説明を省略する。As shown in FIG. 5, the control device 20 outputs a drive pulse to the drive motor 42 upon receiving a vehicle speed signal from a vehicle speed sensor 44, and optimizes the biasing force of the biasing spring 14 according to the vehicle speed. Control. Note that the control device 20 has a general configuration including a microcomputer, so a detailed explanation thereof will be omitted.
次に、上記ワイパー装置７の作動について説明する。Next, the operation of the wiper device 7 will be explained.
降雨時などでハンドル側部に設けられたスイッチレバー
を操作してワイパーモータを駆動すると、ワイパーアー
ム６が払拭開始位置から払拭終了位置に亙って往復払拭
運動され、ワイパープレート１２でフロントガラス３が
払拭される。このとき、従動入力レバー１６の前端部が
カム面１７の所定中段部に沿って摺動し、付勢バネ１４
が操作リンク３５及び連結フック３６を介してワイパー
アーム６の払拭運動に応動して微妙に伸縮され、フロン
トガラス３の形状に起因する付勢バネ１４の付勢力の変
動が補正され、ワイパーブレード１２が払拭開始位置か
ら払拭終了位置に亙って均一化された最適な付勢力でフ
ロントガラス３に押圧される。When the wiper motor is driven by operating the switch lever provided on the side of the handle during rain, etc., the wiper arm 6 is reciprocated from the wiping start position to the wiping end position, and the wiper plate 12 wipes the windshield 3. is wiped away. At this time, the front end of the driven input lever 16 slides along a predetermined middle part of the cam surface 17, and the biasing spring 14
is expanded and contracted slightly in response to the wiping movement of the wiper arm 6 via the operation link 35 and the connecting hook 36, and fluctuations in the biasing force of the biasing spring 14 due to the shape of the windshield 3 are corrected, and the wiper blade 12 is pressed against the windshield 3 with an optimal uniform biasing force from the wiping start position to the wiping end position.
一方、制御装置２０は車速センサ４４からの車速信号を
受けて駆動モータ４２を駆動し、低速走行時にはスペー
サ部材１８が下方へ駆動されて付勢バネ１４の付勢力が
弱められ、高速走行時にはスペーサ部材１８が上方へ駆
動されて付勢バネ１４の付勢力が強められる。On the other hand, the control device 20 receives a vehicle speed signal from the vehicle speed sensor 44 and drives the drive motor 42. During low speed driving, the spacer member 18 is driven downward and the urging force of the urging spring 14 is weakened, and when driving at high speed, the spacer member 18 is The member 18 is driven upward and the biasing force of the biasing spring 14 is strengthened.
以上のように、比較的曲率の大きいフロントガラス３で
も最適な付勢力でワイパーブレード１２をフロントガラ
ス３に押圧できるので、フロントガラス３の所定部分に
おいて付勢力が低下して払拭残りが生じたり、ワイパー
ブレード１２に無理な付勢力が作用して摩耗や変形が促
進されたりすることを防止出来る。しかも、ワイパーア
ーム６の払拭運動に応動してカム面１７で従動入力レバ
ー１６を揺動させ、付勢バネ１４の付勢力を可変させる
ので、ワイパーモータの駆動力を有効に利用出来る。As described above, even if the windshield 3 has a relatively large curvature, the wiper blade 12 can be pressed against the windshield 3 with an optimal biasing force, so that the biasing force may be reduced at a predetermined portion of the windshield 3, resulting in unwiped residue. It is possible to prevent excessive urging force from acting on the wiper blade 12 and promoting wear and deformation. Moreover, since the driven input lever 16 is swung by the cam surface 17 in response to the wiping motion of the wiper arm 6, and the biasing force of the biasing spring 14 is varied, the driving force of the wiper motor can be effectively utilized.
また、車速に応じて付勢バネ１４の付勢力を調節出来る
ので、高速走行時にフロントガラス３上血の気流により
ワイパーアーム６が浮き上がっても、付勢力を高めるこ
とにより最適な付勢力でワイパーブレード１２をフロン
トガラス３に押圧出来る。Furthermore, since the biasing force of the biasing spring 14 can be adjusted according to the vehicle speed, even if the wiper arm 6 is lifted due to the airflow of blood on the windshield 3 during high-speed driving, the wiper blade 12 can be moved with the optimum biasing force by increasing the biasing force. can be pressed against the windshield 3.
また、上記付勢バネ１４を操作する、操作機構１５、ス
ペーサ部材１８、駆動機構１９は、ピボット軸２３の周
辺に比較的コンパクトに設けることが出来、ワイパー装
置７を比較的小型に構成出来る。Further, the operating mechanism 15, spacer member 18, and drive mechanism 19 that operate the biasing spring 14 can be provided relatively compactly around the pivot shaft 23, and the wiper device 7 can be configured to be relatively compact.
ここで、上記ワイパー装置７の構成を部分的に変更して
次のようにしてもよい。尚、同一部材には同一符号を付
してその説明を省略する。Here, the configuration of the wiper device 7 may be partially changed as follows. It should be noted that the same members are given the same reference numerals and their explanations will be omitted.
操作機構１５Ａについて説明すると、第９図・第１０図
に示すように、アームヘッド２８Ａの中央部には収容部
３８内へ突出する支持部５ｏが形成され、支持部５０の
前後両壁部５０ａには操作リンク３５Ａが前後方向に移
動可能に挿通支持され、操作リンク３５Ａの先端部は連
結フック３６を介して付勢バネ１４の基端部に連結され
、操作リンク３５Ａの上部には第１ラツク５１が形成さ
れている。支持部５０には第１ラツク５１と噛合するビ
ニオン５２が左右方向向きの軸部材を介して回転自在に
架設支持され、第１ラツク５１の側方の支持部５０の前
部にはピボット軸２３と平行に従動入力ピン１６Ａが上
下移動自在に装着され、従動入力ピン１６Ａはバネ部材
５３により下方へ付勢され、その下端部はスペーサ部＋
Ｊ’ １８ Ａの上端面に形成されたカム面１７Ａに当
接され、従動人力ピン１６Ａの上部後端部にはピニオン
５２と噛合する第２ラツク５４が形成されている。To explain the operation mechanism 15A, as shown in FIGS. 9 and 10, a support portion 5o that protrudes into the housing portion 38 is formed in the center of the arm head 28A, and both front and rear walls 50a of the support portion 50 An operating link 35A is inserted and supported so as to be movable in the front and back direction, and the distal end of the operating link 35A is connected to the proximal end of the biasing spring 14 via a connecting hook 36. A rack 51 is formed. A pinion 52 that meshes with the first rack 51 is rotatably supported on the support part 50 via a shaft member oriented in the left-right direction. A driven input pin 16A is mounted so as to be vertically movable in parallel with the driven input pin 16A, and the driven input pin 16A is urged downward by a spring member 53, and its lower end is connected to the spacer portion +
A second rack 54 is formed at the upper rear end portion of the driven manual pin 16A to be in contact with the cam surface 17A formed on the upper end surface of J' 18A and to mesh with the pinion 52.
上記スペーサ部材１８Ａは略環状に形成され、ガイドス
リーブ２１に軸方向に移動自在で且つ回転拘束に挿通さ
れ、その下端面において第１歯車４１の上端面に摺接可
能に支持されている。カム面１７Ａは、スペーサ部材１
８Ａの上下方向の１７さしと払拭角αとの関係が第１１
図に示す曲線に２を描くように形成されている。尚、符
号５５は、アームヘッド２８Ａを覆い、作動部への異物
の侵入を防止するカバーである。The spacer member 18A is formed in a substantially annular shape, is inserted into the guide sleeve 21 so as to be freely movable in the axial direction and rotationally restrained, and is supported at its lower end surface so as to be able to come into sliding contact with the upper end surface of the first gear 41. The cam surface 17A is the spacer member 1
The relationship between the vertical direction of 8A and the wiping angle α is the 11th
It is formed so as to draw 2 on the curve shown in the figure. Note that reference numeral 55 is a cover that covers the arm head 28A and prevents foreign matter from entering the operating section.
上記ワイパー装置７Ａにおいて、ワイパーモータが駆動
されてワイパーアーム６が払拭駆動されると、従動入力
ピン１６Ａの従動入力部１６ａがカム面１７Ａに摺接し
て上下方向に駆動され、ピニオン５２を介して操作リン
ク３５Ａが前後方向に駆動され、付勢バネ１４がワイパ
ーアーム６の払拭運動に応動して伸縮され、付勢バネ１
４の付勢力の変動が補正され、ワイパーブレード１２が
払拭開始位置から払拭終了位置に亙って均一化され−た
最適な付勢力でフロントガラス３に押圧される。In the wiper device 7A, when the wiper motor is driven and the wiper arm 6 is wiped, the driven input portion 16a of the driven input pin 16A slides on the cam surface 17A and is driven in the vertical direction. The operation link 35A is driven in the front-rear direction, and the biasing spring 14 is expanded and contracted in response to the wiping movement of the wiper arm 6.
4 is corrected, and the wiper blade 12 is pressed against the windshield 3 with an optimal biasing force that is made uniform from the wiping start position to the wiping end position.
一方、制御装置２０は車速センサ４４からの車速信号を
受けて駆動モータ４２を駆動し、低速走行時にはスペー
サ部材１８Ａが下方へ駆動されて付勢バネ１４の付勢力
が弱められ、高速走行時にはスペーサ部材１８Ａが上方
へ駆動されて付勢バネ１４の付勢力が強められる。On the other hand, the control device 20 drives the drive motor 42 in response to a vehicle speed signal from the vehicle speed sensor 44, and when driving at low speed, the spacer member 18A is driven downward and the urging force of the urging spring 14 is weakened, and when driving at high speed, the spacer member 18A is driven downward and the urging force of the urging spring 14 is weakened. The member 18A is driven upward and the biasing force of the biasing spring 14 is strengthened.
尚、インストルメントパネルに設けたボリュームなどか
ら制御装置２０へ付勢力調整信号を入力可能に構成し、
上記ボリュームを操作することにより付勢バネ１４の付
勢力を調節し得るようにしてもよい。Note that the configuration is such that a biasing force adjustment signal can be inputted to the control device 20 from a volume provided on the instrument panel, etc.
The biasing force of the biasing spring 14 may be adjusted by operating the volume.
図面は本発明の実施例に係るもので、第１図は自動車の
フロントガラス近傍の要部斜視図、第２図はフロントガ
ラス前端近傍のカウル部の縦断面図、第３図はワイパー
装置の要部斜視図、第４図はワイパーアームの一部切欠
斜視図、第５図は第３図Ｖ−Ｖ線断面図、第６図は払拭
角とリテーナの傾斜角との関係を示す線図、第７図は払
拭角と付勢バネの付勢力との関係を示す線図、第８図は
払拭角とスペーサ部材のカム半径との関係を示す線図、
第９図〜第１１図はワイパー装置の変形例に係るもので
、第９図は第４図相当図、第１Ｏ図は第５図相当図、第
１１図は払拭角とスペーサ部材の厚さとの関係を示す線
図である。
３・・フロントガラス、 ６・・ワイパーアーム、７・
・ワイパー装置、 Ｉ２・・ワイパーブレード、
１４・・付勢バネ、 １５・１５Ａ・・操作機構、
１６・・従動人力レバー １６Ａ・・従動入力ピン
、 Ｌ６ａ・・従動入力部、１７・１７Ａ・・カム面
、 １８・１８Ａ・・スペーサ部材、 １９・・駆
動機構、 ２０・・制御装置、 ２３・・ピボット軸、
４４・・車速センサ。
特 許 出 願 人 マツダ株式会社第
図The drawings relate to embodiments of the present invention, and FIG. 1 is a perspective view of the main parts near the windshield of an automobile, FIG. 2 is a longitudinal sectional view of the cowl near the front end of the windshield, and FIG. 3 is a view of the wiper device. 4 is a partially cutaway perspective view of the wiper arm, FIG. 5 is a sectional view taken along the line V-V in FIG. 3, and FIG. 6 is a diagram showing the relationship between the wiping angle and the inclination angle of the retainer. , FIG. 7 is a diagram showing the relationship between the wiping angle and the biasing force of the biasing spring, and FIG. 8 is a diagram showing the relationship between the wiping angle and the cam radius of the spacer member.
Figures 9 to 11 relate to modifications of the wiper device; Figure 9 is a diagram equivalent to Figure 4, Figure 1O is a diagram equivalent to Figure 5, and Figure 11 is a diagram showing the wiping angle and the thickness of the spacer member. FIG. 3. Windshield, 6. Wiper arm, 7.
・Wiper device, I2... wiper blade,
14...Biasing spring, 15.15A...Operating mechanism,
16..Followed human power lever 16A..Followed input pin, L6a..Followed input part, 17.17A..Cam surface, 18.18A..Spacer member, 19..Drive mechanism, 20..Control device, 23.・Pivot axis,
44...Vehicle speed sensor. Patent applicant Mazda Motor Corporation
Claims (1)
をウインド面に弾性付勢する付勢手段と、上記付勢手段
の付勢力を可変に操作する操作機構と、 上記ワイパーアームのピボット軸に軸方向移動可能で且
つ回転拘束に取付けられ、操作機構の従動入力部に当接
しワイパーアームの払拭運動に応動して付勢手段の付勢
力が均一化するように操作機構を操作するカム面が形成
されたスペーサ部材と、 上記スペーサ部材を軸方向に駆動する駆動手段と、 上記駆動手段を外部からの制御信号に基いて制御する制
御手段とを備えたことを特徴とする車両のワイパー装置
。(1) A biasing means for elastically biasing the wiper arm to which the wiper blade is attached toward the window surface, an operating mechanism for variably manipulating the biasing force of the biasing means, and an axial movement on the pivot axis of the wiper arm. A cam surface is formed that is capable of being attached to the rotational restraint, contacts the driven input part of the operating mechanism, and operates the operating mechanism so that the urging force of the urging means is uniformized in response to the wiping movement of the wiper arm. A wiper device for a vehicle, comprising: a spacer member; a drive means for driving the spacer member in an axial direction; and a control means for controlling the drive means based on an external control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234483A JPH0281750A (en) | 1988-09-19 | 1988-09-19 | Wiper device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234483A JPH0281750A (en) | 1988-09-19 | 1988-09-19 | Wiper device for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0281750A true JPH0281750A (en) | 1990-03-22 |
Family
ID=16971728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63234483A Pending JPH0281750A (en) | 1988-09-19 | 1988-09-19 | Wiper device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0281750A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2679505A1 (en) * | 1991-07-23 | 1993-01-29 | Valeo Systemes Dessuyage | Windscreen wiper device, particularly for a motor vehicle |
| JPH0526684U (en) * | 1991-09-12 | 1993-04-06 | 衛 初鹿 | Wiper |
| US5426815A (en) * | 1994-07-08 | 1995-06-27 | Ford Motor Company | Wiper system including an adjustable arm load mechanism |
| US5577292A (en) * | 1992-09-26 | 1996-11-26 | Itt Automotive Europe Gmbh | Windscreen wiper with pressure adjusting means |
| US5613267A (en) * | 1991-06-18 | 1997-03-25 | Battlogg; Stefan | Windshield wiper system with adjustable blade pressure |
| US5771527A (en) * | 1994-07-08 | 1998-06-30 | Itt Automotive Europe Gmbh | Windshield wiper device with contact pressure adjustment dependent on the wiping angle |
| JP2011529823A (en) * | 2008-08-07 | 2011-12-15 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Plate with formed tube for guiding and supporting the drive shaft |
-
1988
- 1988-09-19 JP JP63234483A patent/JPH0281750A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5613267A (en) * | 1991-06-18 | 1997-03-25 | Battlogg; Stefan | Windshield wiper system with adjustable blade pressure |
| FR2679505A1 (en) * | 1991-07-23 | 1993-01-29 | Valeo Systemes Dessuyage | Windscreen wiper device, particularly for a motor vehicle |
| JPH0526684U (en) * | 1991-09-12 | 1993-04-06 | 衛 初鹿 | Wiper |
| US5577292A (en) * | 1992-09-26 | 1996-11-26 | Itt Automotive Europe Gmbh | Windscreen wiper with pressure adjusting means |
| US5426815A (en) * | 1994-07-08 | 1995-06-27 | Ford Motor Company | Wiper system including an adjustable arm load mechanism |
| US5771527A (en) * | 1994-07-08 | 1998-06-30 | Itt Automotive Europe Gmbh | Windshield wiper device with contact pressure adjustment dependent on the wiping angle |
| JP2011529823A (en) * | 2008-08-07 | 2011-12-15 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Plate with formed tube for guiding and supporting the drive shaft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4653136A (en) | Wiper for rear view mirror | |
| US4698872A (en) | Wiper apparatus for vehicles | |
| JP3987431B2 (en) | Car window lifting arm | |
| JPH03502313A (en) | Wiper device used for automobile window glass | |
| JPH0281750A (en) | Wiper device for vehicle | |
| KR20180002299A (en) | Tilting device for seat cushion of vehicle | |
| JPS59167349A (en) | Wiper device | |
| US6065179A (en) | Wiper device with linear wipe pattern | |
| US3466694A (en) | Windshield wiper device | |
| JPH0692203A (en) | Wiper for vehicle | |
| JPH04212658A (en) | Streamline type wind shield wiper for automobile | |
| JPH068944Y2 (en) | Wiper arm device | |
| KR100664892B1 (en) | Windscreen wiper arrangement for vehicles | |
| KR100214718B1 (en) | Wiper device for a vehicle | |
| US4475263A (en) | Windshield wiper system | |
| JPH06234354A (en) | Vehicle wiper device having wiping pressure changing means | |
| JP2009012673A (en) | Wiper device | |
| JPH0327006Y2 (en) | ||
| JPS5940968A (en) | Wiper for vehicle | |
| JP7380484B2 (en) | Wiper control method and wiper control device | |
| JP2005014765A (en) | Wiper device and attack angle setting method of wiper device | |
| JPS6397451A (en) | Wiper device for automobile | |
| US20200130650A1 (en) | Windshield wiper with adaptable attack angle | |
| KR100610959B1 (en) | System for adjusting pushing pressure of wiper blade against glass surface | |
| JP3749985B2 (en) | Wiper device |