JPS6192946A - Manufacturing method of winter-use protection cover for wiper blade - Google Patents
Manufacturing method of winter-use protection cover for wiper bladeInfo
- Publication number
- JPS6192946A JPS6192946A JP60209745A JP20974585A JPS6192946A JP S6192946 A JPS6192946 A JP S6192946A JP 60209745 A JP60209745 A JP 60209745A JP 20974585 A JP20974585 A JP 20974585A JP S6192946 A JPS6192946 A JP S6192946A
- Authority
- JP
- Japan
- Prior art keywords
- wiper blade
- cover
- rubber material
- foaming
- section
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229920001971 elastomer Polymers 0.000 claims abstract description 28
- 239000005060 rubber Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000004088 foaming agent Substances 0.000 claims abstract description 20
- 239000011521 glass Substances 0.000 claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 abstract description 5
- 238000005187 foaming Methods 0.000 abstract description 5
- 238000004073 vulcanization Methods 0.000 description 6
- 239000004604 Blowing Agent Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B60S1/38—Wiper blades
-
- 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
- B60S1/0491—Additional elements being fixed on wipers or parts of wipers not otherwise provided for, e.g. covers, antennae or lights
-
- 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
- B60S1/38—Wiper blades
- B60S2001/3843—Wiper blades equipped with removable cover or protective elements
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〕
本発明は冬期にワイパブレードの凍結を防止するために
ワイパブレードを被覆する保護カバーの製造方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a protective cover for covering a wiper blade in order to prevent the wiper blade from freezing in winter.
冬期、特に寒冷地においては自動車のワイパブレードが
凍結することがある。凍結するとワイパブレードのブレ
ードレバーとレバーヨークの連結部が動かなくなるため
にブレードゴムがガラス曲面に追従せず、ワイパ機能が
達せられなくなる。そこで、このような事態の発生を防
ぐために、ワイパブレード保護カバーが用いられている
。この保護カバーはゴム製で、ワイパブレードを包む筒
状のカバー部とガラス払拭部とを一体的に構成したもの
が一般に用いられている。この場合、カバー部はワイパ
ブレードの作動を阻害しないためにゴム厚は非常に薄く
、通常０．５〜ｌ、、Ｑ ｍｍ程度とされている。In winter, especially in cold regions, the wiper blades of automobiles may freeze. When it freezes, the connection between the blade lever and lever yoke of the wiper blade stops moving, so the blade rubber does not follow the curved surface of the glass, making the wiper function impossible. Therefore, in order to prevent such a situation from occurring, a wiper blade protective cover is used. This protective cover is made of rubber, and generally includes a cylindrical cover portion that encloses the wiper blade and a glass wiping portion that are integrally formed. In this case, the rubber thickness of the cover part is very thin so as not to obstruct the operation of the wiper blade, and is usually about 0.5 to 1.5 mm.
このワイパブレード保護カバーの製造方法としては、押
出成形法は加硫時に薄膜状のカバー部同志が付着し合っ
て変形が生じ、また変形したカバー部に払拭部上が付着
するなどするので適用が困難であるととよシ、一般にラ
テックス型成型や型成形が適用されている。As a manufacturing method for this wiper blade protective cover, the extrusion molding method cannot be applied because the thin film-like cover parts adhere to each other during vulcanization, causing deformation, and the top of the wiping part adheres to the deformed cover part. If this is difficult, latex molding or die molding is generally used.
しかしながらこれらの成形手段では、カバー部が薄いた
めに原料ゴムが流れにくく、また中子をはずすときにカ
バー部の薄膜を破損し率すく、生産性が悪い。またマン
ドレル等を用いてそのまわりに成形して得たカバー部と
、型成形等で得た払拭部とを組付けた保護カバーもある
が、組付部の隙間に侵入した水が凍結し、カバー部の変
形性を阻害するという問題がある。However, in these molding methods, since the cover part is thin, it is difficult for the raw rubber to flow, and the thin film of the cover part is easily damaged when the core is removed, resulting in poor productivity. There is also a protective cover in which a cover part formed by molding using a mandrel etc. and a wiping part obtained by molding etc. are assembled, but water that enters into the gap between the assembled parts freezes. There is a problem that the deformability of the cover portion is inhibited.
本発明は上記実情ＫＮみてなされたもので、柔軟性良好
な薄肉のカバー部をガラス払拭部と一体に有するワイパ
ブレード保護カバーを、カバー部同志またはカバー部と
ガラス払拭部の付着が生じることなく押出成形にて製造
する方法を提供し、上記従来の問題を解決することを目
的とするものである。The present invention has been made in view of the above-mentioned circumstances, and provides a wiper blade protection cover that has a thin cover part with good flexibility and integrated with the glass wiping part, without causing adhesion between the cover parts or between the cover part and the glass wiping part. The purpose of this invention is to provide a method for manufacturing by extrusion molding, and to solve the above-mentioned conventional problems.
〔問題点を解決するための手段および作用効果〕本発明
はカバー部を成形するゴム材料としてゴムだ発泡剤を添
加した材料を用い、ガラス払拭部（ブレードゴム）のゴ
ム材料として発泡剤無添加のゴムを用い、両者を一体押
出成形して発泡ゴムよりなるカバー部を有するワイパブ
レード保護カバーを得ることを特徴とする。[Means and effects for solving the problem] The present invention uses a rubber material to which a foaming agent has been added as the rubber material for molding the cover part, and a rubber material to which no foaming agent is added as the rubber material for the glass wiping part (blade rubber). The invention is characterized in that a wiper blade protective cover having a cover portion made of foamed rubber is obtained by integrally extruding the two rubbers.
カバー部、成形用のゴム材料に発泡剤を添加したことに
より、押出成形における加硫時に発泡によるガス圧で膜
状のカバー部は膨張して変形しにくくなり、膜面同志が
付着することがない。By adding a foaming agent to the rubber material used for the cover and molding, the membrane-like cover expands and becomes difficult to deform due to the gas pressure caused by foaming during vulcanization during extrusion molding, thereby preventing the membrane surfaces from adhering to each other. do not have.
また得られた保護カバーのカバー部は発泡ゴムであって
柔軟性に満み、ワイパブレード作動時の変形に伴なう追
従性が極めて良好である。Further, the cover portion of the obtained protective cover is made of foamed rubber and is highly flexible, and has extremely good followability to deformation during wiper blade operation.
カバー部およびガラス払拭部のゴムとしてはエチレンプ
ロピレンゴムの他、従来より用いられているスチレンブ
タジェンゴム、クロロプレンゴム、天然ゴム等が用いら
れ得る。As the rubber for the cover part and the glass wiping part, in addition to ethylene propylene rubber, conventionally used styrene butadiene rubber, chloroprene rubber, natural rubber, etc. can be used.
発泡剤の添加量としては、得られる発泡ゴムの伸び、引
張シ時の応力、カバー部の膨張量等を考慮して決定され
る。発泡剤添加量は、発泡剤が添加されるゴム１００重
量部に対し、０．２〜２重量部程度が適当である。The amount of the foaming agent added is determined in consideration of the elongation of the foamed rubber obtained, the stress during tensile stress, the amount of expansion of the cover portion, etc. The appropriate amount of the foaming agent added is about 0.2 to 2 parts by weight per 100 parts by weight of the rubber to which the foaming agent is added.
先ず本発明によシ得られるワイパブレード保護カバーを
図面によシ説明する。ワイパブレード保護カバー１はワ
イパブレード２を被覆して保護するための薄肉筒状で発
泡ゴムよシなるカバー部１１と、カバー部１１にその軸
方向に沿って一体に形成し、基端でワイパブレードを保
持し先端でガラスを払拭する非発泡ゴムのガラス払拭部
１２とよりなる。First, a wiper blade protective cover obtained according to the present invention will be explained with reference to the drawings. The wiper blade protective cover 1 includes a thin-walled cylindrical cover part 11 made of foam rubber to cover and protect the wiper blade 2, and is integrally formed with the cover part 11 along its axial direction, and the wiper blade protector 1 is formed integrally with the cover part 11 along the axial direction. It consists of a glass wiping part 12 made of non-foamed rubber that holds the blade and wipes the glass with its tip.
次に発明者らが行なったワイパブレード保護カバーの製
造の一例を示す。Next, an example of manufacturing a wiper blade protective cover carried out by the inventors will be shown.
第１表に示す材料を用いてガラス払拭部およびカバー部
を一体押出成形した。The glass wiping part and the cover part were integrally extruded using the materials shown in Table 1.
Ｅコロ
第 １ 表
なお、第１表において発泡剤は発泡剤ＤＰＴ（ジ・ニト
ロソ・ペンタメチレン−テトラミン）であり、発泡助剤
は尿素発泡助剤である。そしてカバー部材料としては上
記払拭部の材料に発泡剤および発泡助剤をそれぞれ表記
のように同量添加したものを用いた。E Coro Table 1 In Table 1, the blowing agent is DPT (di-nitroso-pentamethylene-tetramine), and the blowing aid is urea blowing aid. As the material for the cover part, the same amount of a foaming agent and a foaming aid were added to the material for the wiping part as indicated.
払拭部用材料およびカバー部用材料を同時押出成形後、
’ｚ ｏ ｏ °ｃの加硫槽に通して連続的に５分間加
硫し、図示の形状のワイパブレード保護カバーを得た。After co-extruding the material for the wiping part and the material for the cover part,
The material was passed through a vulcanization bath at 100° C. and continuously cured for 5 minutes to obtain a wiper blade protective cover having the shape shown in the figure.
カバー部には相互の付着や不規則な変形は全く認められ
なかった。押出時のカバー部の厚さは約０．５ｍｍであ
シ、加硫時に発泡して得られた製品のカバー部の厚さは
発泡剤の量により約１．０〜０．ｑｍｍの範囲であった
。No mutual adhesion or irregular deformation was observed in the cover portion. The thickness of the cover part during extrusion is about 0.5 mm, and the thickness of the cover part of the product obtained by foaming during vulcanization is about 1.0 to 0.5 mm depending on the amount of foaming agent. It was in the range of qmm.
第２表に、得られた製品におけるカバー部の比重および
応力を、発泡剤添加量との関係で示す。表において発泡
剤添加量Ｏは発泡剤を添加し々かった比較例、即ち、カ
バー部および払拭部とも第１表における払拭部材料で一
体押出成形した従来例を示す。また、ＥＢは引張伸びを
、σ□は引張２５％時の応力を示す。Table 2 shows the specific gravity and stress of the cover portion of the obtained product in relation to the amount of foaming agent added. In the table, the foaming agent addition amount O indicates a comparative example in which a large amount of foaming agent was added, that is, a conventional example in which both the cover part and the wiping part were integrally extruded using the wiping part material shown in Table 1. Further, EB indicates tensile elongation, and σ□ indicates stress at 25% tensile strength.
冨扉ｍ
第 ２ 表
上記の結果よシ知られる如く、本発明のワイパブレード
保護カバーにおける発泡カバー部は、引張伸びが最低で
２２０％であり、この程度の伸びを有すれば、ワイパブ
レードの変形に充分に追従し得る。特に引張時の応力は
非発泡のものに比して小さく、極めて柔軟性に富むもの
であって、ワイパブレードの変形作動に対して全く抵抗
とはならない。As is known from the results shown in Table 2, the foamed cover portion of the wiper blade protective cover of the present invention has a minimum tensile elongation of 220%, and if it has this level of elongation, the wiper blade will Deformation can be followed sufficiently. In particular, the stress during tension is smaller than that of non-foamed material, and it is extremely flexible, providing no resistance to the deformation of the wiper blade.
なお、発泡剤添加量が０．２重量部未満では発泡剤無添
加のものだ比して顕著な柔軟性の向上がみられたい。ま
た加硫時におけるガス発生量が少なく、カバー部の変形
防止効果が不充分である。Note that when the amount of blowing agent added is less than 0.2 parts by weight, a remarkable improvement in flexibility can be seen compared to the case where no blowing agent is added. Furthermore, the amount of gas generated during vulcanization is small, and the effect of preventing deformation of the cover portion is insufficient.
一方、添加量を２重量部を越えて多くするとカバー部の
伸びが不足し、かつ発泡時のガス圧が高くなりすぎカバ
ー部が破損しやすい。On the other hand, if the amount added exceeds 2 parts by weight, the elongation of the cover portion will be insufficient, and the gas pressure during foaming will become too high, causing the cover portion to be easily damaged.
以上説明したように、本発明によシ払拭部を形成すべき
発泡剤を含まない材料と、カバー部を形成すべき発泡剤
を含む材料を同時押出成形すれば、加硫時にカバー部に
おいて付着や変形が生じることなく、所望の形状の製品
が得られるので生産性が極めて良好である。As explained above, according to the present invention, if the material that does not contain a foaming agent to form the wiping part and the material that contains a foaming agent to form the cover part are co-extruded, the material will adhere to the cover part during vulcanization. Productivity is extremely high because products with desired shapes can be obtained without any deformation or deformation.
また得られた製品は、そのカバー部は必要な伸びと極め
てすぐれた柔軟性を示し、ワイパブレードの作動時の変
形によく追従する。In addition, the cover portion of the obtained product exhibits the necessary elongation and excellent flexibility, and follows the deformation of the wiper blade during operation.
図は本発明により得られたワイパブレード保護カバー内
にワイパブレードを収納した状態を示す断面図である。
１・・・・・・ワイパブレード保護カバー１１・・・・
・・カバー部
１２・・・・・・ガラス払拭部
２・・・・・・ワイバプレードThe figure is a sectional view showing a state in which a wiper blade is housed in a wiper blade protective cover obtained according to the present invention. 1... Wiper blade protective cover 11...
...Cover part 12...Glass wiping part 2...Waiba Blade
Claims (2)
該カバー部にその軸方向に一体形成したガラス払拭部と
よりなるウインター用ワイパブレード保護カバーを製造
するに際し、ゴム材料に発泡剤を添加したカバー部成形
用ゴム材料と発泡剤を添加しないガラス払拭部成形用ゴ
ム材料とを一体押出成形し、加硫することを特徴とする
ウインター用ワイパブレード保護カバーの製造方法。(1) A foaming agent is added to the rubber material when manufacturing a winter wiper blade protective cover consisting of a thin cylindrical cover part that protects the wiper blade and a glass wiping part integrally formed with the cover part in the axial direction. A method for producing a protective cover for a winter wiper blade, characterized by integrally extruding a rubber material for molding a cover part and a rubber material for molding a glass wiping part without adding a foaming agent, and vulcanizing the same.
、発泡剤が添加されるゴム材料１００重量部に対し０．
２〜２重量部とした特許請求の範囲第１項記載のウイン
ター用ワイパブレード保護カバーの製造方法。(2) The amount of foaming agent added in the rubber material for molding the cover part is 0.00 parts by weight per 100 parts by weight of the rubber material to which the foaming agent is added.
The method for manufacturing a winter wiper blade protective cover according to claim 1, wherein the amount is 2 to 2 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60209745A JPS6192946A (en) | 1985-09-20 | 1985-09-20 | Manufacturing method of winter-use protection cover for wiper blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60209745A JPS6192946A (en) | 1985-09-20 | 1985-09-20 | Manufacturing method of winter-use protection cover for wiper blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6192946A true JPS6192946A (en) | 1986-05-10 |
| JPH0124655B2 JPH0124655B2 (en) | 1989-05-12 |
Family
ID=16577932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60209745A Granted JPS6192946A (en) | 1985-09-20 | 1985-09-20 | Manufacturing method of winter-use protection cover for wiper blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6192946A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01170058U (en) * | 1988-05-10 | 1989-11-30 | ||
| JPH058704A (en) * | 1991-07-03 | 1993-01-19 | Fukoku Co Ltd | Manufacture of wiper freeze preventing cover and freeze preventing wiper |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124021U (en) * | 1974-08-10 | 1976-02-21 |
-
1985
- 1985-09-20 JP JP60209745A patent/JPS6192946A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124021U (en) * | 1974-08-10 | 1976-02-21 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01170058U (en) * | 1988-05-10 | 1989-11-30 | ||
| JPH058704A (en) * | 1991-07-03 | 1993-01-19 | Fukoku Co Ltd | Manufacture of wiper freeze preventing cover and freeze preventing wiper |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0124655B2 (en) | 1989-05-12 |
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