JP2007118739A - Wiper blade joint member - Google Patents

Wiper blade joint member Download PDF

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Publication number
JP2007118739A
JP2007118739A JP2005312324A JP2005312324A JP2007118739A JP 2007118739 A JP2007118739 A JP 2007118739A JP 2005312324 A JP2005312324 A JP 2005312324A JP 2005312324 A JP2005312324 A JP 2005312324A JP 2007118739 A JP2007118739 A JP 2007118739A
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Prior art keywords
slit
coupling member
fitting hole
wiper blade
joint member
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Granted
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JP2005312324A
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JP4920240B2 (en
Inventor
Kazuto Yokoo
和人 横尾
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Nippon Wiper Blade Co Ltd
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Nippon Wiper Blade Co Ltd
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Priority to JP2005312324A priority Critical patent/JP4920240B2/en
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    • 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
    • B60S1/40—Connections between blades and arms
    • B60S1/4006—Connections between blades and arms for arms provided with a hook-shaped end
    • B60S1/4009—Connections between blades and arms for arms provided with a hook-shaped end comprising a detachable intermediate element mounted on the hook-shaped end

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper blade joint member capable of securely attaching a joint member to a wiper blade, and facilitating attaching work, in the joint member joining the wiper blade and a wiper arm. <P>SOLUTION: The joint member 20 is provided with a fitting hole 26 fitted with a rivet 16 of the wiper blade 10, and a slit 27 cut into the fitting hole 26. A cylindrical portion 25 around the fitting hole 26 is provided with a thick wall portion 28 with large wall thickness on the slit 27 side across the fitting hole 26, and a thin wall portion 29 with small wall thickness on the opposite side to the slit 27 across the fitting hole 26. A side wall 21 of the joint member 20 is provided with a recessed portion 31 at a part adjacent to the thin wall portion 29. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ワイパー装置において、ワイパーブレードとワイパーアームの結合に用いられる結合部材に関する。   The present invention relates to a coupling member used for coupling a wiper blade and a wiper arm in a wiper device.

一般に、ワイパー装置は、ブレードラバーを有するワイパーブレードと、ワイパーブレードが連結されるワイパーアームと、ワイパーアームを駆動する駆動機構とから構成される。このようなワイパー装置には、ワイパーブレードに固定されたリベットに、結合部材（クリップ）を組み付け、この結合部材にワイパーアームのフック部を引っ掛けることにより、ワイパーアームにワイパーブレードを連結するものがある。   In general, a wiper device includes a wiper blade having a blade rubber, a wiper arm to which the wiper blade is coupled, and a drive mechanism that drives the wiper arm. In such a wiper device, there is one in which a coupling member (clip) is assembled to a rivet fixed to the wiper blade, and a hook portion of the wiper arm is hooked on the coupling member to couple the wiper blade to the wiper arm. .

このような結合部材は、結合部材に形成した嵌合穴（丸穴）にリベットを嵌合させるので、結合部材とワイパーアームを堅固に結合することができ、耐久性においても優れている。しかしながら、その一方で、嵌合穴にリベットを嵌合させる作業は容易でなく、組み付け作業に手間がかかっていた。   Since such a coupling member fits a rivet into a fitting hole (round hole) formed in the coupling member, the coupling member and the wiper arm can be firmly coupled, and the durability is also excellent. However, on the other hand, the work of fitting the rivet into the fitting hole is not easy, and the assembling work is troublesome.

本発明は、このような問題点に着目してなされたもので、ワイパーブレードとワイパーアームを結合する結合部材において、結合部材をワイパーブレードに堅固に組み付けることができるとともに、組み付け作業を容易にした結合部材を提供することを目的とする。   The present invention has been made paying attention to such problems, and in the coupling member that couples the wiper blade and the wiper arm, the coupling member can be firmly assembled to the wiper blade, and the assembling work is facilitated. An object is to provide a coupling member.

本発明は、樹脂成形により形成されワイパーブレードとワイパーアームの結合に用いられる結合部材において、前記ワイパーブレードの取り付け部に嵌合する嵌合穴と、前記嵌合穴内へ前記取り付け部を導入するためのスリットとを備え、前記スリットの幅が、高温時に、常温時と比較して大きくなるようにした。   The present invention provides a coupling member formed by resin molding and used for coupling a wiper blade and a wiper arm, for fitting a fitting hole to be fitted into the fitting portion of the wiper blade, and for introducing the mounting portion into the fitting hole. The width of the slit was larger at a high temperature than at a normal temperature.

結合部材は、熱可塑性の樹脂で形成されてもよい。
前記嵌合穴を挟んで前記スリット側の部分の肉厚を、前記スリットと反対側の部分の肉厚よりも大きくしてもよい。 The coupling member may be formed of a thermoplastic resin.
The thickness of the portion on the slit side across the fitting hole may be larger than the thickness of the portion on the opposite side to the slit.

前記嵌合穴を挟んで前記スリットと反対側の部分に、凹部を形成してもよい。   You may form a recessed part in the part on the opposite side to the said slit on both sides of the said fitting hole.

本発明によれば、結合部材（例えば結合部材２０）の嵌合穴（例えば嵌合穴２５）にワイパーブレード（例えばワイパーブレード１０）の取り付け部（例えばリベット１６）を導入するためのスリット（例えばスリット２７）の幅を、常温時と比較して高温時に大きくしたので、樹脂成形直後の高温時に、結合部材をワイパーブレードに組み付けるようにすれば、幅の広いスリットを介して、取り付け部を嵌合穴内に容易に嵌合させることができる。一方、樹脂成形直後から時間が経過して、結合部材の温度が常温となると、スリット幅が狭くなるので、取り付け部は嵌合穴から抜け出しにくくなり、結合部材はワイパーブレードに対して堅固に組み付けられる。   According to the present invention, a slit (for example, a rivet 16) for introducing a mounting portion (for example, rivet 16) of a wiper blade (for example, wiper blade 10) into a fitting hole (for example, fitting hole 25) of a coupling member (for example, coupling member 20). Since the width of the slit 27) is increased at a high temperature compared with that at room temperature, if the coupling member is assembled to the wiper blade at a high temperature immediately after resin molding, the attachment portion is fitted through the wide slit. It can be easily fitted in the fitting hole. On the other hand, when time passes immediately after resin molding and the temperature of the coupling member reaches room temperature, the slit width becomes narrow, so the mounting part is difficult to come out of the fitting hole, and the coupling member is firmly attached to the wiper blade. It is done.

結合部材を熱可塑性の樹脂で形成すれば、高温時と常温時におけるスリット幅の変更を容易に達成できる。
結合部材の嵌合穴を挟んでスリット側の部分（例えば厚肉部２８）の肉厚を、スリットと反対側の部分（例えば薄肉部２９）の肉厚よりも大きくすれば、樹脂成形直後の高温時から常温になって樹脂が成形収縮した場合、スリット側の部分の収縮率は、スリットと反対側の部分の収縮率よりも大きくなるので、結果として、高温時よりも低温時のスリット幅を狭くできる。 If the coupling member is formed of a thermoplastic resin, the slit width can be easily changed between a high temperature and a normal temperature.
If the thickness of the portion on the slit side (for example, the thick portion 28) is made larger than the thickness of the portion on the opposite side to the slit (for example, the thin portion 29) across the fitting hole of the coupling member, When the resin shrinks and molds at normal temperature from high temperature, the shrinkage ratio of the slit side part becomes larger than the shrinkage ratio of the part opposite to the slit, and as a result, the slit width at low temperature than at high temperature. Can be narrowed.

嵌合穴を挟んでスリットと反対側の部分に凹部（例えば凹部３１）を形成すれば、この凹部の分だけ、嵌合穴を挟んでスリット側の樹脂量は、スリットと反対側の樹脂量よりも少なくなるので、その分、高温時と常温時におけるスリット幅の変化量を大きくできる。また、結合部材を、スリットを広げるように撓みやすくでき、組み付け作業をさらに容易にできる。   If a concave portion (for example, the concave portion 31) is formed in the portion opposite to the slit across the fitting hole, the amount of resin on the slit side across the fitting hole is the amount of resin on the opposite side of the slit. Therefore, the amount of change in the slit width at high temperature and normal temperature can be increased accordingly. Further, the coupling member can be easily bent so as to widen the slit, and the assembling work can be further facilitated.

以下、添付図面に基づいて本発明の実施形態について説明する。
図１には、ワイパーブレード１０がワイパーアーム１に結合された状態を示す。また、図２にはワイパーアーム１を、図３にはワイパーブレード１０を、それぞれ単独で示す。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a state in which the wiper blade 10 is coupled to the wiper arm 1. 2 shows the wiper arm 1 and FIG. 3 shows the wiper blade 10 alone.

図示されるように、ワイパーアーム１は、図示されない駆動機構に連係されるアームヘッド２と、アームヘッド２に回動可能に連結されたリテーナ３と、リテーナ３に保持されるアームピース４とから構成される。アームピース４の先端は、Ｕ字型に折り曲げられたフック部５となっている。このフック部５が、ワイパーブレード１０に取り付けられた結合部材２０に組み付けられることにより、ワイパーアーム１とワイパーブレード１０の結合がなされる。   As shown in the figure, the wiper arm 1 includes an arm head 2 linked to a drive mechanism (not shown), a retainer 3 rotatably connected to the arm head 2, and an arm piece 4 held by the retainer 3. Composed. The tip of the arm piece 4 is a hook portion 5 bent into a U-shape. The hook portion 5 is assembled to the coupling member 20 attached to the wiper blade 10 so that the wiper arm 1 and the wiper blade 10 are coupled.

ワイパーブレード１０は、プライマリレバー１１と、プライマリレバー１１に支持された複数のセカンダリレバー１２と、各セカンダリレバー１２に支持された複数のヨークレバー１３と、これらのヨークレバー１３に支持されたブレードラバー１４とを備えている。プライマリレバー１１の略中央部には、開口部１５が形成されている。この開口部１５内には、プライマリレバー１１の両側側面の間に掛け渡されたリベット１６が配置されている。結合部材２０は、このリベット１６に対して取り付けられ、開口部１５内に配置される。   The wiper blade 10 includes a primary lever 11, a plurality of secondary levers 12 supported by the primary lever 11, a plurality of yoke levers 13 supported by each secondary lever 12, and a blade rubber supported by these yoke levers 13. 14. An opening 15 is formed at a substantially central portion of the primary lever 11. A rivet 16 is disposed in the opening 15 so as to span between both side surfaces of the primary lever 11. The coupling member 20 is attached to the rivet 16 and is disposed in the opening 15.

図４には、結合部材２０の断面図を示す。結合部材２０は、例えばＰＢＴ（ポリブチレンテレフタレート）やＰＯＭ（ポリアセタール）等の熱可塑性樹脂を一体成形して形成されるものであり、図示されるように、両側の側壁２１と、これら側壁２１の間に配置された本体部２２及び前壁部２３を備えている。   FIG. 4 shows a cross-sectional view of the coupling member 20. The coupling member 20 is formed by integrally molding a thermoplastic resin such as PBT (polybutylene terephthalate) or POM (polyacetal), for example. A main body portion 22 and a front wall portion 23 are provided between them.

本体部２２は、結合部材２０の中央付近から後端付近まで延びる部分で、結合部材２０の中央付近に配置された円筒部２５を備えている。ワイパーアーム１の結合部材２０への結合時には、ワイパーアーム１のフック部５は、前壁部２３と円筒部２５の間に挿入され、円筒部２５の外周に引っ掛けられる。   The main body portion 22 is a portion extending from the vicinity of the center of the coupling member 20 to the vicinity of the rear end, and includes a cylindrical portion 25 disposed near the center of the coupling member 20. When the wiper arm 1 is coupled to the coupling member 20, the hook portion 5 of the wiper arm 1 is inserted between the front wall portion 23 and the cylindrical portion 25 and hooked on the outer periphery of the cylindrical portion 25.

両側側壁２１の円筒部２５と隣接する部分には開口が形成されており、これらの開口から円筒部２５の中空部分にかけて形成された貫通部分は、ワイパーブレード１０のリベット１６に嵌合する嵌合穴２６となっている。また、結合部材２０には、その下縁部から嵌合穴２６にかけて切り込まれたスリット２７が形成されている。嵌合穴２６にリベット１６を嵌合させるとき、リベット１６は、このスリット２７を通って、結合部材２０（円筒部２５）を変形させながら、嵌合穴２６内に押し込まれる。   Openings are formed in portions of the side walls 21 adjacent to the cylindrical portion 25, and the penetrating portions formed from these openings to the hollow portions of the cylindrical portion 25 are fitted into the rivets 16 of the wiper blade 10. It is a hole 26. Further, the coupling member 20 is formed with a slit 27 cut from the lower edge portion to the fitting hole 26. When the rivet 16 is fitted into the fitting hole 26, the rivet 16 is pushed into the fitting hole 26 through the slit 27 while deforming the coupling member 20 (cylindrical portion 25).

本実施形態の結合部材２０は、樹脂成形直後のリベット１６への装着時（高温時）にスリット１６の幅が広く、常温時にスリット１６の幅が狭くなるように構成されていることを特徴としている。このような作用効果を達成するため、結合部材２０の円筒部２５は、嵌合部２６を挟んでスリット２７側が肉厚の大きい厚肉部２８となっており、また嵌合部２６を挟んでスリット２７と反対側が肉厚の小さい薄肉部２９となっている。また、側壁２１の上縁部には、薄肉部２９と隣接して、凹部３１が切り欠かれている。   The coupling member 20 of the present embodiment is characterized in that the width of the slit 16 is wide when mounted on the rivet 16 immediately after resin molding (at high temperature) and the width of the slit 16 is narrow at normal temperature. Yes. In order to achieve such an effect, the cylindrical portion 25 of the coupling member 20 has a thick wall portion 28 on the slit 27 side with the fitting portion 26 interposed therebetween, and the fitting portion 26 is sandwiched therebetween. The side opposite to the slit 27 is a thin portion 29 having a small thickness. In addition, a recess 31 is cut out at the upper edge of the side wall 21 adjacent to the thin portion 29.

次に、本実施形態の結合部材２０の作用について説明する。
図５には、樹脂成形時（及び樹脂成形直後）における結合部材２０を示す。図示されるように、樹脂成形時における結合部材２０は、常温における結合部材２０とは異なった形状に形成される。具体的に、樹脂成形時（高温時）の結合部材２０は、円筒部２５において折れ曲がった形状となっており、その分、スリット２７の間隔が常温時よりも広くなっている。したがって、樹脂成形直後に、結合部材２０をリベット１６に装着すれば、広くなったスリット２７を通してリベット１６を嵌合穴２６内に容易に押し込むことができる。したがって、結合部材２０のリベット１６への組み付け作業が容易となる。 Next, the operation of the coupling member 20 of this embodiment will be described.
FIG. 5 shows the coupling member 20 during resin molding (and immediately after resin molding). As illustrated, the coupling member 20 at the time of resin molding is formed in a shape different from the coupling member 20 at room temperature. Specifically, the coupling member 20 at the time of resin molding (at a high temperature) has a bent shape at the cylindrical portion 25, and accordingly, the interval between the slits 27 is wider than that at normal temperature. Therefore, if the coupling member 20 is attached to the rivet 16 immediately after resin molding, the rivet 16 can be easily pushed into the fitting hole 26 through the widened slit 27. Therefore, the assembly work of the connecting member 20 to the rivet 16 is facilitated.

一方、樹脂成形から時間が経過して樹脂温度が常温となると、樹脂は収縮する（成形収縮）。この場合、肉厚の大きい厚肉部２８の方が、肉厚の小さい薄肉部２９よりも大きな収縮率で収縮するので、結果として、厚肉部２８に配置されたスリット２７の幅は、樹脂成形時（高温時）よりも狭くなり、結合部材２０は、スリット２７の幅が狭く、円筒部２５の前後がほぼ真っ直ぐな通常状態（図４の状態）に戻る。これにより、嵌合穴２６内に組み付けられたリベット２６は、狭くなったスリット２７から抜け出しにくくなる。また、成形収縮により嵌合穴２６の大きさも小さくなるので、嵌合穴２６とリベット１６との間の隙間も小さくなる。したがって、結合部材２０は、ワイパーブレード１０に堅固に組み付けられる。   On the other hand, when time elapses from resin molding and the resin temperature reaches room temperature, the resin shrinks (molding shrinkage). In this case, the thick part 28 having a large thickness contracts with a larger contraction rate than the thin part 29 having a small thickness, and as a result, the width of the slit 27 disposed in the thick part 28 is made of resin. It becomes narrower than at the time of molding (at the time of high temperature), and the connecting member 20 returns to the normal state (the state of FIG. 4) in which the width of the slit 27 is narrow and the front and rear of the cylindrical portion 25 are almost straight. Thereby, the rivet 26 assembled in the fitting hole 26 is difficult to come out from the narrowed slit 27. In addition, since the size of the fitting hole 26 is reduced by molding shrinkage, the gap between the fitting hole 26 and the rivet 16 is also reduced. Therefore, the coupling member 20 is firmly assembled to the wiper blade 10.

また、本実施形態の結合部材２０では、側壁２１には、薄肉部２９と隣接して、凹部３１が切り欠かれており、その分、嵌合穴２６を挟んでスリット２７側の樹脂量を、スリット２７と反対側の樹脂量よりも少なくなっているので、高温時と常温時におけるスリット２７の幅の変化量は、凹部３１がない場合よりも大きくなっている。また、結合部材２０のリベット１６への組み付け時に、結合部材２０はスリット２７を広げるように撓みやすく、それだけ組み付け作業が容易である。   Further, in the coupling member 20 of the present embodiment, the side wall 21 is adjacent to the thin-walled portion 29, and the concave portion 31 is cut away, and the amount of resin on the slit 27 side is reduced by the amount corresponding to the fitting hole 26. Since the amount of resin on the side opposite to the slit 27 is smaller, the amount of change in the width of the slit 27 at a high temperature and at a normal temperature is larger than when there is no recess 31. Further, when the coupling member 20 is assembled to the rivet 16, the coupling member 20 is easily bent so as to widen the slit 27, and the assembling work is facilitated accordingly.

ワイパーブレードがワイパーアームに組み付けられた状態を示す側面図である。It is a side view which shows the state with which the wiper blade was assembled | attached to the wiper arm. ワイパーアームを示す側面図である。It is a side view which shows a wiper arm. ワイパーブレードを示す平面図である。It is a top view which shows a wiper blade. 本発明の実施形態における常温時の結合部材を示す断面図である。It is sectional drawing which shows the coupling member at the time of normal temperature in embodiment of this invention. 同じく、高温時（樹脂成形時及び樹脂成形直後）の結合部材を示す断面図である。Similarly, it is sectional drawing which shows the coupling member at the time of high temperature (at the time of resin molding and immediately after resin molding).

符号の説明Explanation of symbols

１ ワイパーアーム
５ フック部
１０ ワイパーブレード
１６ リベット
２０ 結合部材
２１ 側壁
２２ 本体部
２３ 前壁部
２５ 円筒部
２６ 嵌合穴
２７ スリット
２８ 厚肉部
２９ 薄肉部
３１ 凹部 DESCRIPTION OF SYMBOLS 1 Wiper arm 5 Hook part 10 Wiper blade 16 Rivet 20 Coupling member 21 Side wall 22 Main body part 23 Front wall part 25 Cylindrical part 26 Fitting hole 27 Slit 28 Thick part 29 Thin part 31 Concave part

Claims (4)

樹脂成形により形成されワイパーブレードとワイパーアームの結合に用いられる結合部材において、
前記ワイパーブレードの取り付け部に嵌合する嵌合穴と、
前記嵌合穴内へ前記取り付け部を導入するためのスリットと
を備え、
前記スリットの幅が、高温時に、常温時と比較して大きくなるようにした結合部材。 In a coupling member formed by resin molding and used for coupling a wiper blade and a wiper arm,
A fitting hole that fits into the attachment part of the wiper blade;
A slit for introducing the attachment portion into the fitting hole,
A coupling member in which the width of the slit is larger at a high temperature than at a normal temperature. 熱可塑性の樹脂で形成される請求項１に記載の結合部材。   The coupling member according to claim 1, which is made of a thermoplastic resin. 前記嵌合穴を挟んで前記スリット側の部分の肉厚を、前記スリットと反対側の部分の肉厚よりも大きくした請求項１又は請求項２に記載の結合部材。   The coupling member according to claim 1 or 2, wherein a thickness of a portion on the slit side with respect to the fitting hole is larger than a thickness of a portion on the opposite side to the slit. 前記嵌合穴を挟んで前記スリットと反対側の部分に、凹部を形成した請求項１から請求項３の何れか一つに記載の結合部材。   The coupling member according to any one of claims 1 to 3, wherein a concave portion is formed in a portion opposite to the slit across the fitting hole.
JP2005312324A 2005-10-27 2005-10-27 Wiper blade coupling member Expired - Fee Related JP4920240B2 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01173059A (en) * 1987-12-28 1989-07-07 Mita Ind Co Ltd Light transmittable color toner
JP2003534194A (en) * 2000-05-25 2003-11-18 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 Wiper blades, especially for cleaning automotive window glass

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01173059A (en) * 1987-12-28 1989-07-07 Mita Ind Co Ltd Light transmittable color toner
JP2003534194A (en) * 2000-05-25 2003-11-18 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 Wiper blades, especially for cleaning automotive window glass

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