JPH0332498B2 - - Google Patents
Info
- Publication number
- JPH0332498B2 JPH0332498B2 JP58013179A JP1317983A JPH0332498B2 JP H0332498 B2 JPH0332498 B2 JP H0332498B2 JP 58013179 A JP58013179 A JP 58013179A JP 1317983 A JP1317983 A JP 1317983A JP H0332498 B2 JPH0332498 B2 JP H0332498B2
- Authority
- JP
- Japan
- Prior art keywords
- wiper
- spring
- pressure
- state
- shape memory
- 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.)
- Expired - Lifetime
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 9
- 229910000734 martensite Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000005357 flat glass Substances 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 229910001000 nickel titanium Inorganic materials 0.000 description 4
- 244000145845 chattering Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910003310 Ni-Al Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 2
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017535 Cu-Al-Ni Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
- 229910017777 Cu—Al—Zn Inorganic materials 0.000 description 1
- 229910017943 Cu—Zn Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery 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)
Description
【発明の詳細な説明】
本発明は、自動車等におけるワイパのワイパ圧
調節調節に係り、特に車速やエンジンの回転数に
応じて自動的にワイパ圧を調節できるようにし、
ワイパの機能を向上させるようにしたワイパのワ
イパ圧調節装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to wiper pressure adjustment for wipers in automobiles, etc., and in particular, to automatically adjust wiper pressure according to vehicle speed and engine rotation speed.
The present invention relates to a wiper pressure adjusting device for a wiper that improves the wiper function.
従来、ワイパのウインドガラス面に対する押圧
力、いわゆるワイパ圧は一定であり、車速やエン
ジンの回転数に応じて調節することはできなかつ
た。このため低速走行時にワイパ圧が強すぎる
と、ワイパが円滑に作動せず、びびり音が発生す
ることがあり、また停車時、特に夏期のように高
温時には、ワイパのブレードゴムがウインドガラ
スに粘着し、ワイパ機能が低下する傾向がある。
これらの不具合を除くために、ワイパ圧を弱くす
ると、高速走行時にワイパが走行風によつてウイ
ンドガラスから浮き上がり、ワイパによつて十分
にウインドガラスに付着した雨水を拭き取ること
ができず、雨天走行時において良好な視界を確保
することができないということがあり、改良の余
地があつた。 Conventionally, the pressing force of the wiper against the windshield surface, so-called wiper pressure, has been constant and cannot be adjusted according to vehicle speed or engine rotational speed. For this reason, if the wiper pressure is too strong when driving at low speeds, the wiper may not operate smoothly and may generate chattering noise. Also, when the wiper is stopped, especially at high temperatures such as in the summer, the wiper blade rubber will stick to the windshield. However, the wiper function tends to deteriorate.
In order to eliminate these problems, if the wiper pressure is weakened, the wiper will be lifted off the windshield by the wind when driving at high speed, and the wiper will not be able to sufficiently wipe away the rainwater adhering to the windshield, making it difficult to drive in the rain. At times, it was not possible to secure good visibility, so there was room for improvement.
本発明は、上記した従来技術の欠点を除くため
になされたものであつて、その目的とするところ
は、ワイパばねによつてワイパ圧をワイパに付与
し、該ワイパによつてウインドガラスに付着した
雨水を拭き取るようにしたものにおいて、車速と
エンジンの回転数に応じてワイパ圧を調節できる
ようにすることによつて、低速走行時にワイパを
円滑に作動させ、びびり音を発生させないように
することであり、また停車時にワイパのブレード
ゴムをウインドガラスに粘着させないようにする
と共に、高速走行時に走行風によつてワイパがウ
インドガラスから浮き上がらないようにし、ウイ
ンドガラスに付着した雨水をワイパで十分に拭き
取り、雨天走行時において良好な視界を確保でき
るようにすることである。また他の目的は、車速
やエンジンの回転数に応じてワイパばねを伸長状
態と短縮状態に調節できるようにした形状記憶合
金からなるワイパ圧調節部材を設けることによつ
て、簡単な構成によりワイパ圧を調節し、ワイパ
機能を向上させることである。更に他の目的は、
ワイパばねを伸長又は短縮させる作動装置を、ワ
イパと共に揺動運動する取付部材上に装着して、
該作動装置がワイパと共に揺動するようにするこ
とによつて、ワイパ圧調節装置を備えながらワイ
パの必要駆動力をほとんど増大させないで済むよ
うにし、特にワイパばねの張力の大きい高速走行
時においてもワイパが円滑に作動し得るようにす
ることである。 The present invention has been made to eliminate the above-mentioned drawbacks of the prior art, and its purpose is to apply wiper pressure to the wiper using a wiper spring, and use the wiper to apply wiper pressure to the windshield. To enable the wiper pressure to be adjusted according to the vehicle speed and engine rotation speed in a device designed to wipe off rainwater, so that the wiper operates smoothly and does not generate chattering noise when driving at low speeds. This also prevents the wiper blade rubber from sticking to the windshield when the car is stopped, and prevents the wiper from being lifted off the windshield by the wind when driving at high speeds, so that the wiper can sufficiently remove rainwater that has adhered to the windshield. The purpose is to ensure good visibility when driving in the rain. Another object of the present invention is to provide a wiper pressure adjusting member made of a shape memory alloy that can adjust the wiper spring between an extended state and a shortened state according to the vehicle speed and engine speed. The purpose is to adjust the pressure and improve the wiper function. Yet another purpose is
An actuating device for extending or shortening the wiper spring is mounted on a mounting member that swings together with the wiper,
By making the actuating device swing together with the wiper, the required drive force of the wiper can be hardly increased even though the wiper pressure adjustment device is provided, and even during high-speed driving when the wiper spring tension is high. The purpose is to enable the wiper to operate smoothly.
また実開昭57−52350には、車速に応じてワイ
パのワイパ圧を変化させることができるようにし
たウインドワイパが開示されているが、該従来例
はワイパアームとは一体的に揺動しない部分、即
ち車体の一部にワイパアームスプリングを伸長又
は短縮させる作動装置を取り付けており、該作動
装置とワイパアームスプリングとをコントロール
ワイヤにより連結しているため、ワイパの揺動時
には、該コントロールワイヤが揺動運動ごとに曲
げられることになり、ワイパの必要駆動力が増大
する欠点があり、特に高速走行時にはこのコント
ロールワイヤがソレノイド及びカムプレートによ
り引つ張られて伸長し、非常にこわばつて曲げに
くい状態に保たれるため、更にワイパの必要駆動
力が大きくなり、高速走行時のワイパの作動が円
滑にならなかつたり、ワイパの駆動モータに大き
な負担がかかる等の難点があつた。またソレノイ
ドを２つも使用している上にコントロールロツ
ド、カムプレート、コントロールワイヤ及び２つ
のスプリング等の多くの部品を使用しているた
め、構造が複雑となり、コストも高くつくという
不具合があつた。 Further, Japanese Utility Model Application No. 57-52350 discloses a windshield wiper that can change the wiper pressure according to the vehicle speed, but the conventional example has a part that does not swing integrally with the wiper arm. In other words, an actuating device that extends or shortens the wiper arm spring is attached to a part of the vehicle body, and the actuating device and the wiper arm spring are connected by a control wire, so when the wiper swings, the control wire swings. The disadvantage is that the required driving force for the wiper increases as it is bent with each movement, and especially when driving at high speeds, this control wire is stretched and stretched by the solenoid and cam plate, making it extremely stiff and difficult to bend. As a result, the required driving force for the wiper becomes larger, resulting in disadvantages such as the wiper not operating smoothly during high-speed driving and placing a large burden on the wiper drive motor. Additionally, since it uses two solenoids and many other parts such as a control rod, cam plate, control wire, and two springs, the structure is complicated and the cost is high. .
要するに本発明は、ワイパばねによつてワイパ
圧をワイパに付与し、該ワイパによつてウインド
ガラスに付着した雨水を拭き取るようにし、かつ
車速に応じて前記ワイパ圧を変化させるようにし
たワイパのワイパ圧調節装置において、車速とエ
ンジンの回転数を検出する検出装置と、該検出装
置からの出力信号によつて作動する制御装置と、
該制御装置からの出力信号によつて前記ワイパば
ねを伸張状態と短縮状態に変化させて前記ワイパ
圧を調節できるように前記ワイパばねの一端を係
止する形状記憶合金からなるワイパばね調節部材
を含む作動装置とを設け、該形状記憶合金は、そ
の両端の長さが、前記ワイパばねが伸張状態にな
るように該ワイパばねに抗して最小に短縮した場
合を変形前の記憶形態とし、該両端の長さが、前
記ワイパばねが短縮状態になるように該ワイパば
ねの復元力によつて最大に伸長した場合を二次永
久変形加工形態として記憶していることを特徴と
するものである。 In short, the present invention provides a wiper in which wiper pressure is applied to the wiper by a wiper spring, rainwater adhering to the windshield is wiped away by the wiper, and the wiper pressure is changed according to the vehicle speed. The wiper pressure adjustment device includes a detection device that detects vehicle speed and engine rotation speed, and a control device that operates based on an output signal from the detection device.
A wiper spring adjustment member made of a shape memory alloy that locks one end of the wiper spring so that the wiper pressure can be adjusted by changing the wiper spring between an extended state and a shortened state according to an output signal from the control device. the shape memory alloy has a memory form before deformation when the length of both ends of the shape memory alloy is shortened to a minimum against the wiper spring so that the wiper spring is in an expanded state; The method is characterized in that a case in which the length of both ends is maximally expanded by the restoring force of the wiper spring so that the wiper spring is in a shortened state is stored as a secondary permanent deformation processing form. be.
以下本発明を図面に示す実施例に基いて説明す
る。第１図に示すものは、本発明の第１実施例に
係り、本発明に係るワイパのワイパ圧調節装置１
は、検出装置２と、制御装置３と、作動装置４と
を備えている。検出装置２は、車速を検出する検
出器、例えばスピードメータ６と、エンジンの回
転数によつて変動する電圧を検出する検出器、例
えばジエネレータ７とからなつている。制御装置
３は検出器２からの入力信号によつて作動するよ
うになつている。 The present invention will be explained below based on embodiments shown in the drawings. What is shown in FIG. 1 is a wiper pressure adjusting device 1 for a wiper according to a first embodiment of the present invention.
includes a detection device 2, a control device 3, and an actuation device 4. The detection device 2 includes a detector that detects the vehicle speed, such as a speedometer 6, and a detector that detects a voltage that varies depending on the engine speed, such as a generator 7. The control device 3 is adapted to be operated by an input signal from the detector 2.
作動装置４は、制御装置３からの出力信号によ
つて作動するようになつており、取付け部材１０
と、ワイパばね調節部材１１と、ワイパばね１２
と、ワイパ１３とを備えている。取付け部材１０
は、車体１５に枢着され枢軸１６に一端が固着さ
れており、他端にはワイパカバー１７が枢着され
ている。ワイパばね調節部材１１は、形状記憶合
金Ｍからなり、図中上方をＶ形に開いた線状のば
ね材で形成されている。該ワイパばね調節部材の
一端に形成された円弧部１１ａには、取付け部材
１０に植設されたピン１８が嵌入しており、他端
に形成された円弧部１１ｂには、ワイパばね１２
の一端が係止されている。該ワイパばねは一例と
してコイル状の引張ばねで、ワイパカバー１７内
に収容されている。 The actuating device 4 is adapted to be actuated by an output signal from the control device 3, and is adapted to be actuated by an output signal from the control device 3.
, wiper spring adjusting member 11 , and wiper spring 12
and a wiper 13. Mounting member 10
is pivotally attached to the vehicle body 15, one end is fixed to a pivot shaft 16, and a wiper cover 17 is pivotally attached to the other end. The wiper spring adjusting member 11 is made of a shape memory alloy M, and is formed of a linear spring member with a V-shaped opening at the top in the figure. A pin 18 implanted in the mounting member 10 is fitted into a circular arc portion 11a formed at one end of the wiper spring adjustment member, and a wiper spring 12 is inserted into a circular arc portion 11b formed at the other end.
One end of is locked. The wiper spring is, for example, a coiled tension spring, and is housed within the wiper cover 17.
ワイパ１３は、ワイパアーム２０と、ブレード
取付け部材２１と、ブレードゴム２２とからなつ
ており、ワイパアーム２０の一端は、ワイパばね
１２の他端に係止されている。ブレード取付け部
材２１は、ワイパアーム２０の他端に枢着された
連結部２１ａと、該連結部の図中左右両端に夫々
枢着された一対の取付け部２１ｂとからなつてい
る。ブレードゴム２２は、一対の取付け部２１ｂ
の図中下面に固着されており、ウインドガラス２
３を押圧し得るように配置されている。 The wiper 13 consists of a wiper arm 20, a blade attachment member 21, and a blade rubber 22, and one end of the wiper arm 20 is locked to the other end of the wiper spring 12. The blade attachment member 21 includes a connecting portion 21a pivotally attached to the other end of the wiper arm 20, and a pair of attaching portions 21b pivotally attached to both left and right ends of the connecting portion in the figure. The blade rubber 22 has a pair of attachment parts 21b.
In the figure, it is fixed to the bottom surface of the window glass 2.
It is arranged so that it can press 3.
形状記憶合金Ｍからなるワイパばね調節部材１
１は、その両端の長さｌが、ワイパばね１２が伸
長状態になるように該ワイパばねに抗して最小に
短縮した場合を変形前の記憶形態とし、該両端の
長さｌが、ワイパばね１２が短縮状態になるよう
に該ワイパばねの復元力によつて最大に伸長した
場合を二次永久変形加工形態として記憶してい
る。従つて常温の状態においては、ワイパばね調
節部材１１は、ワイパばね１２の復元力によつ
て、その両端の長さｌは最大になつている。 Wiper spring adjustment member 1 made of shape memory alloy M
1, the memory form before deformation is when the length l of both ends is shortened to the minimum against the wiper spring 12 so that the wiper spring 12 is in an extended state, and the length l of both ends is the memory form of the wiper spring 12. The case where the spring 12 is stretched to the maximum due to the restoring force of the wiper spring so as to be in a shortened state is stored as a secondary permanent deformation processing form. Therefore, at room temperature, the wiper spring adjusting member 11 has a maximum length l at both ends due to the restoring force of the wiper spring 12.
また形状記憶合金Ｍには、Ag−Cd系、Au−
Cd系、Cu−Al−Ni系、Cu−Al−Zn系、Cu−Zn
系、Ni−Al系、Ni−Ti系などの合金があり、こ
れらの合金ははじめの原形を記憶しているかのよ
うに、その二次永久変形加工形態が加熱によつて
完全に変形前の形状に復元回復する性質をもつて
いる。この形状記憶効果を発現させるには、まず
マルテンサイト逆変態開始温度As点以下Ms点以
上で作用応力を負荷して応力誘起マルテンサイト
を発生させ、母相と発生マルテンサイトプレート
界面に弾性ひずみを貯えさせる。これはマルテン
サイト変態終了点Mf以下の冷却により凍結され、
その変形は残留する。As−A1点（マルテンサイ
ト逆変態終了点）以上への加熱によりマルテンサ
イトの消滅と共にそのひずみも解放されて形状回
復となる。本実施例では代表的な形状記憶合金で
あるNi−Ti系のニチノール（50％Ni、50％Ti）
を採用しており、このニチノールでは上記のプロ
セスと異なり、マルテンサイト変態点以下の室温
で永久変形加工し、これを変態点以上に加熱して
マルテンサイトの母相への消滅によつて形状記憶
効果を発現させている。 In addition, shape memory alloy M includes Ag-Cd system, Au-
Cd series, Cu-Al-Ni series, Cu-Al-Zn series, Cu-Zn
There are alloys such as Ni-Al, Ni-Al, and Ni-Ti, and these alloys have a secondary permanent deformation process that completely changes to the state before deformation by heating, as if they remember their original shape. It has the property of restoring its shape. In order to develop this shape memory effect, stress-induced martensite is generated by applying stress at a temperature below the martensite reverse transformation starting point As and above the Ms point, and elastic strain is created at the interface between the parent phase and the plate of the generated martensite. Let them save. This is frozen by cooling below the martensitic transformation end point Mf,
The deformation remains. By heating above the As- A point (martensite reverse transformation end point), martensite disappears and its strain is released, resulting in shape recovery. In this example, we will use Ni-Ti based nitinol (50% Ni, 50% Ti), which is a typical shape memory alloy.
Unlike the process described above, this Nitinol undergoes permanent deformation at room temperature below the martensite transformation point, and then is heated above the transformation point to create shape memory by disappearing into the matrix of martensite. It is showing effects.
本発明は、上記のように構成されており、以下
その作用について説明する。第１図に示すよう
に、車輛が停車している状態では、エンジンは停
止しており、ジエネレータ７からの発生電圧は零
であり、また車速も零であるから、制御装置３か
ら形状記憶合金Ｍからなるワイパばね調節部材１
１にはパルス電流は全く供給されない。従つて該
ワイパばね調節部材は、加熱されることなく冷却
状態にあり、ワイパばね１２によつて引き伸ばさ
れて、同図に示す如く二次永久変形加工形態を保
つており、その両端の長さｌは最大の長さに伸長
しており、ワイパばね１２は短縮状態にあり、ブ
レードゴム１４に付与されているワイパ圧はほと
んど零である。従つて停車時、夏期のように高温
時においてもブレードゴム１４がウインドガラス
２３に粘着することはない。 The present invention is configured as described above, and its operation will be explained below. As shown in FIG. 1, when the vehicle is stopped, the engine is stopped, the voltage generated from the generator 7 is zero, and the vehicle speed is also zero. Wiper spring adjustment member 1 consisting of M
1 is not supplied with any pulse current. Therefore, the wiper spring adjusting member is in a cooled state without being heated, and is stretched by the wiper spring 12 to maintain a secondary permanently deformed state as shown in the figure, and the length of both ends thereof is l has expanded to its maximum length, the wiper spring 12 is in a shortened state, and the wiper pressure applied to the blade rubber 14 is almost zero. Therefore, the blade rubber 14 does not stick to the window glass 23 even when the vehicle is stopped or at high temperatures such as in summer.
次に車速が一定値以上になると、車速及びエン
ジンの回転数を検出装置２のスピードメータ６及
びジエネレータ７が検出し、この検出装置からの
入力信号によつて制御装置３が作動する。する
と、形状記憶合金Ｍからなるワイパばね調節部材
１１にパルス電流が流れ、該ワイパばね調節部材
が加熱され、ワイパばね１２のばね力に抗して変
形前の記憶形態に復元して短縮し、両端の長さｌ
が最小となる。 Next, when the vehicle speed exceeds a certain value, the speedometer 6 and the generator 7 of the detection device 2 detect the vehicle speed and engine rotational speed, and the control device 3 is activated by the input signal from this detection device. Then, a pulse current flows through the wiper spring adjusting member 11 made of the shape memory alloy M, the wiper spring adjusting member is heated, resists the spring force of the wiper spring 12, restores to the memorized form before deformation, and shortens. length l of both ends
is the minimum.
この状態においては、ワイパばね１２は伸長状
態にあり、ブレードゴム１４に付与されているワ
イパ圧は最大となる。従つて高速走行時にブレー
ドゴム１４が走行風によつてウインドガラス２３
から浮き上がることがなく、従つて雨天における
高速走行中でもブレードゴム１４によつてウイン
ドガラス２３に付着した雨水を十分に拭き取るこ
とができる。また低速走行時においては、ワイパ
圧が適度な大きさに調節されているので、ワイパ
１３のブレードゴム２２はウインドガラス２３面
を円滑に摺動し、びびり音を発生するようなこと
はない。 In this state, the wiper spring 12 is in an extended state, and the wiper pressure applied to the blade rubber 14 is at its maximum. Therefore, when driving at high speed, the blade rubber 14 is damaged by wind on the windshield 23.
Therefore, rainwater adhering to the window glass 23 can be sufficiently wiped away by the blade rubber 14 even when driving at high speed in rainy weather. Further, when the vehicle is running at low speed, the wiper pressure is adjusted to an appropriate level, so the blade rubber 22 of the wiper 13 slides smoothly on the surface of the window glass 23, and no chattering noise is generated.
なお、ワイパばね調節部材１１は、該形状記憶
合金Ｍの変形前の記憶形態への復元温度の異なる
２種類以上の形状記憶合金Ｍを適宜に組み合わせ
ることにより、ワイパ圧を段階的に変化させるこ
とも可能である。 The wiper spring adjusting member 11 can change the wiper pressure in stages by appropriately combining two or more types of shape memory alloys M that have different restoration temperatures to the memory form before deformation of the shape memory alloy M. is also possible.
第２図に示すものは、本発明の第２実施例に係
り、形状記憶合金Ｍからなるワイパばね調節部材
１１が、図中上方をＶ形に開いたねじりコイルば
ね状となつており、その他の部分は、第１図に示
すものと同一であり、同一の部分には、同一の符
号を付して説明は省略する。 The one shown in FIG. 2 is a second embodiment of the present invention, in which a wiper spring adjusting member 11 made of a shape memory alloy M is in the shape of a torsion coil spring with a V-shaped opening at the top in the figure. The parts shown in FIG. 1 are the same as those shown in FIG.
本発明は、上記のように構成され、作用するも
のであるから、ワイパばねによつてワイパ圧をワ
イパに付与し、該ワイパによつてウインドガラス
に付着した雨水を拭き取るようにしたものにおい
て、車速とエンジンの回転数に応じてワイパ圧が
調節されるようになつているので、低速走行時に
ワイパが円滑に作動し、びびり音の発生を防止で
きる効果がある。また停車時にはワイパのブレー
ドゴムがウインドガラスに粘着するのを防止でき
る利点があり、更には高速走行時に走行風によつ
てワイパがウインドガラスから浮き上がることが
なく、ワイパによつて十分にウインドガラスに付
着した雨水を拭き取ることができ、雨天走行時に
おいて良好な視界を確保できるという効果があ
る。 Since the present invention is configured and operates as described above, the wiper spring applies wiper pressure to the wiper, and the wiper wipes off rainwater adhering to the windshield. Since the wiper pressure is adjusted according to the vehicle speed and engine rotational speed, the wiper operates smoothly when driving at low speeds, which has the effect of preventing chatter noise. Another advantage is that it prevents the wiper blade rubber from sticking to the windshield when the vehicle is stopped.Furthermore, when driving at high speeds, the wiper does not lift up from the windshield due to the wind, and the wiper is able to fully adhere to the windshield. It has the effect of wiping away adhering rainwater and ensuring good visibility when driving in the rain.
また車速やエンジンの回転数に応じてワイパ圧
を伸長状態と短縮状態に調節できるようにした形
状記憶合金からなるワイパ圧調節部材が設けられ
ているので、簡単な構成によりワイパ圧を調節す
ることができ、ワイパ機能が向上するという効果
がある。 In addition, there is a wiper pressure adjustment member made of a shape memory alloy that can adjust the wiper pressure between an extended state and a shortened state depending on the vehicle speed and engine speed, so the wiper pressure can be adjusted with a simple configuration. This has the effect of improving the wiper function.
またワイパばねを伸長又は短縮させる作動装置
を、ワイパと共に摺動運動する取付部材上に装着
して、該作動装置がワイパと共に摺動するように
したので、ワイパ圧調節装置を備えながらワイパ
の必要駆動力をほとんど増大させないで済むこと
となり、特にワイパばねの張力の大きい高速走行
時においてもワイパが円滑に作動し得るという効
果がある。 In addition, an actuating device for extending or shortening the wiper spring is mounted on a mounting member that slides together with the wiper, so that the actuating device slides together with the wiper. This results in almost no need to increase the driving force, which has the effect that the wiper can operate smoothly even when driving at high speeds when the tension of the wiper spring is high.
第１図は本発明の第１実施例に係り、ワイパの
ワイパ圧調節装置の横断面図、第２図は本発明の
第２実施例に係り、ワイパのワイパ圧調節装置の
部分横断面図、部分横断面図である。
１はワイパのワイパ圧調節装置、２は検出装
置、３は制御装置、４は作動装置、１０は取付部
材、１１はワイパばね調節部材、１２はワイパば
ね、１３はワイパ、１５は車体、２３はウインド
ガラス、Ｍは形状記憶合金である。
FIG. 1 is a cross-sectional view of a wiper pressure adjusting device for a wiper according to a first embodiment of the present invention, and FIG. 2 is a partial cross-sectional view of a wiper pressure adjusting device for a wiper according to a second embodiment of the present invention. , a partial cross-sectional view. 1 is a wiper pressure adjustment device for the wiper, 2 is a detection device, 3 is a control device, 4 is an actuation device, 10 is a mounting member, 11 is a wiper spring adjustment member, 12 is a wiper spring, 13 is a wiper, 15 is a vehicle body, 23 is window glass, and M is shape memory alloy.
Claims (1)
し、該ワイパによつてウインドガラスに付着した
雨水を拭き取るようにし、かつ車速に応じて前記
ワイパ圧を変化させるようにしたワイパのワイパ
圧調節装置において、車速とエンジンの回転数を
検出する検出装置と、該検出装置からの出力信号
によつて作動する制御装置と、該制御装置からの
出力信号によつて前記ワイパばねを伸張状態と短
縮状態に変化させて前記ワイパ圧を調節できるよ
うに前記ワイパばねの一端を係止する形状記憶合
金からなるワイパばね調節部材を含む作動装置と
を設け、該形状記憶合金は、その両端の長さが、
前記ワイパばねが伸長状態になるように該ワイパ
ばねに抗して最小に短縮した場合を変形前の記憶
形態とし、該両端の長さが、前記ワイパばねが短
縮状態になるように該ワイパばねの復元力によつ
て最大に伸長した場合を二次永久変形加工形態と
して記憶していることを特徴とするワイパのワイ
パ圧調節装置。1. A wiper pressure adjustment device for a wiper, which applies wiper pressure to the wiper using a wiper spring, wipes off rainwater adhering to the windshield with the wiper, and changes the wiper pressure according to vehicle speed. , a detection device for detecting vehicle speed and engine rotational speed; a control device operated by an output signal from the detection device; and a control device for controlling the wiper spring in an extended state and a shortened state in accordance with an output signal from the control device. and an actuating device including a wiper spring adjusting member made of a shape memory alloy that locks one end of the wiper spring so that the wiper pressure can be adjusted by changing the wiper pressure, the shape memory alloy having a length of both ends thereof. ,
The memory form before deformation is the case where the wiper spring is shortened to the minimum against the wiper spring so as to be in the stretched state, and the length of both ends of the wiper spring is set so that the wiper spring is in the shortened state. A wiper pressure adjustment device for a wiper, characterized in that a wiper pressure adjustment device stores a state of maximum elongation due to a restoring force as a secondary permanent deformation processing form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58013179A JPS59140147A (en) | 1983-01-28 | 1983-01-28 | Wiper pressure adjuster for windshield wiper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58013179A JPS59140147A (en) | 1983-01-28 | 1983-01-28 | Wiper pressure adjuster for windshield wiper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59140147A JPS59140147A (en) | 1984-08-11 |
| JPH0332498B2 true JPH0332498B2 (en) | 1991-05-13 |
Family
ID=11825954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58013179A Granted JPS59140147A (en) | 1983-01-28 | 1983-01-28 | Wiper pressure adjuster for windshield wiper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59140147A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3402417C1 (en) * | 1984-01-25 | 1985-07-18 | Audi AG, 8070 Ingolstadt | Wiper arm for windshield wiper systems |
| JPS6164563A (en) * | 1984-09-06 | 1986-04-02 | Mazda Motor Corp | Wiper device for motorcar |
| JPS6216069U (en) * | 1985-07-15 | 1987-01-30 | ||
| DE3628342A1 (en) * | 1986-08-21 | 1988-02-25 | Bayerische Motoren Werke Ag | WINDOW CLEANING DEVICE FOR MOTOR VEHICLES |
| JPS6354569U (en) * | 1986-09-30 | 1988-04-12 | ||
| DE3709475A1 (en) * | 1987-03-23 | 1988-10-13 | Bosch Gmbh Robert | WIPING DEVICE FOR WINDOWS OF MOTOR VEHICLES |
| JPH0739714Y2 (en) * | 1987-03-31 | 1995-09-13 | 自動車電機工業株式会社 | Wiper arm pressure controller |
| JPS63154372U (en) * | 1987-03-31 | 1988-10-11 | ||
| DE19801392C2 (en) | 1998-01-16 | 2000-04-13 | Daimler Chrysler Ag | Windscreen wipers with piezoceramic actuators |
| ITTO20030511A1 (en) * | 2003-07-02 | 2005-01-03 | C F R Societa Consortile Per Azio Ni | VEHICLE WITH INCLUSIVE WIPER WIPER DEVICE |
| US9358956B2 (en) | 2011-06-23 | 2016-06-07 | GM Global Technology Operations LLC | Enhanced vehicle wiper blade using active materials |
| CN102837674B (en) * | 2012-08-28 | 2014-12-24 | 天津博信汽车零部件有限公司 | Windscreen wiper |
| CN106240527A (en) * | 2016-08-29 | 2016-12-21 | 象山华鹰塑料工程有限公司 | A kind of vehicle wiper |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752350B2 (en) * | 1975-06-02 | 1982-11-06 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752350U (en) * | 1980-09-11 | 1982-03-26 |
-
1983
- 1983-01-28 JP JP58013179A patent/JPS59140147A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752350B2 (en) * | 1975-06-02 | 1982-11-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59140147A (en) | 1984-08-11 |
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