JPH08111260A - Sealing structure of harness lead-out part of rotary sensor - Google Patents
Sealing structure of harness lead-out part of rotary sensorInfo
- Publication number
- JPH08111260A JPH08111260A JP24596994A JP24596994A JPH08111260A JP H08111260 A JPH08111260 A JP H08111260A JP 24596994 A JP24596994 A JP 24596994A JP 24596994 A JP24596994 A JP 24596994A JP H08111260 A JPH08111260 A JP H08111260A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- harness
- sealing portion
- sealing
- out part
- 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
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、自動車に搭載される
車輪回転数検出用回転センサの防水性能を高めるのに有
効なハーネス口出し部のシール構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harness outlet seal structure effective for enhancing the waterproof performance of a wheel rotation speed detecting rotation sensor mounted on an automobile.
【０００２】[0002]
【従来の技術】自動車の回転数検出に用いられる回転セ
ンサは、水濡れが不可避の箇所に装着されるので、防水
性に優れることが要求される。2. Description of the Related Art A rotation sensor used for detecting the number of rotations of an automobile is required to be excellent in waterproofness because it is attached to a place where water is inevitable.
【０００３】そのため、従来の一般的な回転センサは、
図３に示すように、検出部１（この検出部は、磁石、ポ
ールピース、発電用コイル又は感磁素子を筒状ハウジン
グ２に収納して構成される）の後部開口をモールド樹脂
３で塞ぎ、この樹脂でセンサの出力端子４に接続されて
いる信号伝送用ワイヤーハーネス５の一体化を図り、併
せて防水のための封止を行っている。Therefore, the conventional general rotation sensor is
As shown in FIG. 3, a rear opening of the detection unit 1 (the detection unit is configured by housing a magnet, a pole piece, a coil for power generation or a magnetic sensing element in a cylindrical housing 2) is closed with a mold resin 3. With this resin, the signal transmission wire harness 5 connected to the output terminal 4 of the sensor is integrated, and at the same time, waterproof sealing is performed.
【０００４】なお、モールド樹脂３としては、一般に高
融点熱可塑性樹脂が用いられるが、この樹脂はハーネス
外皮との密着性が悪く、これを、ハーネス外皮上に直接
モールドする構造では外皮との界面を伝って水が検出部
内に侵入する。このため、ハーネス外皮上に、その外皮
に対して密着性のある熱可塑性樹脂のシーリング部６を
形成し、そのシーリング部６の外周に設けた山谷７で水
の移動を止める方法を採っている。Generally, a high melting point thermoplastic resin is used as the mold resin 3, but this resin has poor adhesion to the harness outer skin, and in the structure in which this resin is directly molded on the harness outer skin, an interface with the outer skin is formed. Water penetrates into the detection unit. Therefore, a method is adopted in which a sealing portion 6 made of a thermoplastic resin that adheres to the outer surface of the harness is formed on the outer surface of the harness, and movement of water is stopped by the ridges and valleys 7 provided on the outer periphery of the sealing portion 6. .
【０００５】[0005]
【発明が解決しようとする課題】従来のシーリング部に
設けている山谷７は、水の移動経路に高低差をつけ、か
つ移動路を長くするのには役立つが、図３に示すような
山形状では樹脂３との間の界面そのものを無くすことは
できず、毛管現象等で山を乗り越えて水が内部に流入す
る恐れがあった。The ridges and valleys 7 provided in the conventional sealing portion are useful for making a difference in height of the moving path of water and lengthening the moving path, but the mountain as shown in FIG. 3 is used. In the shape, the interface itself with the resin 3 cannot be eliminated, and there is a risk that water will flow into the interior by overcoming the mountain due to a capillary phenomenon or the like.
【０００６】本発明は、回転センサの防水に関する信頼
性を高めるために、上述したハーネス口出し部の封止性
能を高めることを課題としている。An object of the present invention is to enhance the sealing performance of the above-mentioned harness lead-out portion in order to enhance the reliability of waterproofness of the rotation sensor.
【０００７】[0007]
【課題を解決するための手段】上記の課題を解決するた
め、本発明においては、ハーネス外皮上に設けるシーリ
ング部の外周の山の先端を鋭くしてシーリング部をモー
ルド樹脂に融着させる構成を採用したのである。なお、
シーリング部は、鋭くした山の最先端に膨らみ部をもつ
形状にするとモールド樹脂との融着がより強固になる。In order to solve the above problems, the present invention provides a structure in which the tip of the ridge on the outer periphery of the sealing portion provided on the harness outer skin is sharpened to fuse the sealing portion to the molding resin. It was adopted. In addition,
If the sealing part has a shape having a bulge at the tip of the sharpened mountain, the fusion with the molding resin becomes stronger.
【０００８】[0008]
【作用】シーリング部用の樹脂は、その外周を覆うモー
ルド樹脂よりも低融点のものが用いられる。The resin for the sealing portion has a melting point lower than that of the molding resin covering the outer periphery of the sealing resin.
【０００９】また、図３に示すような回転センサの製造
では、ハーネス外皮上にシーリング部を予め設けてお
き、後工程でモールド樹脂を射出成形して設ける方法が
採られる。従って、シーリング部は、モールド樹脂のモ
ールド熱で当然に加熱されるが、モールド熱が加わる時
間は極く短いことから、熱容量が大きい従来のシーリン
グ部の山形状では山の温度が融点まで高まらず、モール
ド樹脂との融着が不充分になって水の侵入経路となる界
面が残る。Further, in the manufacture of the rotation sensor as shown in FIG. 3, a method is employed in which a sealing portion is provided on the outer surface of the harness in advance and a molding resin is injection-molded in a later step. Therefore, the sealing part is naturally heated by the mold heat of the molding resin, but since the time for which the mold heat is applied is extremely short, the peak temperature of the conventional sealing part with a large heat capacity does not raise the peak temperature to the melting point. Insufficient fusion with the mold resin leaves an interface serving as a water entry path.
【００１０】これに対し、本発明の構造では、シーリン
グ部の山の先端が鋭くなっているので瞬間的に加わる熱
でも山の温度は融点を越え、これにより山が溶けてモー
ルド樹脂との融着が起こり、前述の界面そのものが消滅
して水密シールの信頼性が高まる。On the other hand, in the structure of the present invention, since the tip of the crest of the sealing portion is sharp, the temperature of the crest exceeds the melting point even by the heat applied momentarily, whereby the crest melts and melts with the mold resin. Adhesion occurs, the aforementioned interface itself disappears, and the reliability of the watertight seal increases.
【００１１】なお、山の先端に膨らみ部を設けておく
と、モールド樹脂の接触面積が広がり、モールド熱を吸
収し易くなるため、溶融度合が高まって融着がより強固
になる。If a bulge is provided at the tip of the crest, the contact area of the mold resin is expanded and the mold heat is easily absorbed, so that the degree of fusion is increased and the fusion is further strengthened.
【００１２】[0012]
【実施例】図１及び図２に、本発明のシール構造の具体
例を示す。図の５は回転センサの出力端子に接続するワ
イヤーハーネス、６はそのハーネスの端末外皮上に設け
たシーリング部である。1 and 2 show specific examples of the seal structure of the present invention. In the figure, 5 is a wire harness connected to the output terminal of the rotation sensor, and 6 is a sealing portion provided on the terminal outer skin of the harness.
【００１３】シーリング部６は、ハーネス外皮に対して
密着性の良い熱可塑性樹脂で形成されており、その樹脂
がハーネス上でのモールド成形時にハーネス外皮に付着
して外皮との間のシールがなされている。The sealing portion 6 is formed of a thermoplastic resin having good adhesion to the harness outer skin, and the resin adheres to the harness outer skin during molding on the harness to form a seal with the outer skin. ing.
【００１４】このシーリング部６の外周には、従来同
様、山谷７を設けてある。山の形状は、従来のそれと違
って図１（ａ）に示すように先端が鋭利になっており、
そのため、図１（ｂ）に示す樹脂３のモールド熱で山が
確実に溶け、樹脂３との間の界面が無くなって水の侵入
経路が遮断される。On the outer circumference of the sealing portion 6, there are provided ridges 7 as in the conventional case. Unlike the conventional shape, the mountain has a sharp tip as shown in FIG. 1 (a),
Therefore, the mountain is surely melted by the mold heat of the resin 3 shown in FIG. 1B, the interface with the resin 3 is lost, and the water intrusion route is blocked.
【００１５】図２（ａ）では鋭利にした山の先端に塊状
或いは球状の膨み部８を設けており、その膨みによる表
面積の増加で樹脂３のモールド熱が山の先端部に集中し
て加わる。従って、山の溶融が起こり易く、融着の状態
がより良くなる。In FIG. 2 (a), a bulged portion 8 having a lump shape or a spherical shape is provided at the tip of the sharpened ridge, and the mold surface heat of the resin 3 is concentrated on the tip portion of the ridge due to the increase in the surface area due to the bulge. To join. Therefore, melting of the mountain is likely to occur, and the state of fusion is improved.
【００１６】なお、実施例では、シーリング部６用の樹
脂として熱可塑性樹脂を、モールド樹脂３として高融点
熱可塑性樹脂を各々用いたが、樹脂の組合せはこれに限
定されない。In the embodiment, the thermoplastic resin is used as the resin for the sealing portion 6 and the high melting point thermoplastic resin is used as the molding resin 3, but the combination of the resins is not limited to this.
【００１７】[0017]
【発明の効果】以上説明したように、本発明のシール構
造では、モールド樹脂で覆うハーネス外皮上のシーリン
グ部を、そのシーリング部の外周に設ける山の形を工夫
してモールド樹脂に確実に融着させるようにしたので、
従来構造では充分でなかったハーネス口出し部の水密性
を高めて回転センサの防水性能をより良くすることが可
能になる。As described above, in the seal structure of the present invention, the sealing portion on the outer surface of the harness covered with the molding resin is surely fused to the molding resin by devising the shape of the mountain provided on the outer periphery of the sealing portion. I decided to wear it,
It becomes possible to improve the waterproof performance of the rotation sensor by increasing the watertightness of the harness outlet portion, which was not sufficient with the conventional structure.
【図１】（ａ）：ハーネス外皮上に設けるシーリング部
の一例を示す断面図 （ｂ）：同上のシーリング部を用いた本発明のシール構
造の一例の断面図FIG. 1A is a sectional view showing an example of a sealing portion provided on a harness outer skin. FIG. 1B is a sectional view showing an example of a sealing structure of the present invention using the same sealing portion.
【図２】（ａ）：シーリング部の他の例を示す断面図 （ｂ）：同上のシーリング部を用いた本発明のシール構
造の他の例の断面図FIG. 2A is a cross-sectional view showing another example of the sealing portion, and FIG. 2B is a cross-sectional view of another example of the seal structure of the present invention using the same sealing portion.
【図３】本発明を適用する回転センサの概要を示す断面
図FIG. 3 is a sectional view showing an outline of a rotation sensor to which the present invention is applied.
１ 検出部 ２ 筒状ハウジング ３ モールド樹脂 ４ 出力端子 ５ ワイヤーハーネス ６ シーリング部 1 Detection part 2 Cylindrical housing 3 Mold resin 4 Output terminal 5 Wire harness 6 Sealing part
Claims (2)
外皮上に、その外皮に対して密着性のある熱可塑性樹脂
のシーリング部を設け、外周に山谷を設けたそのシーリ
ング部をセンサ後部のモールド樹脂中に埋設してこのモ
ールド樹脂からのハーネス口出し部を液封するハーネス
口出し部のシール構造において、前記シーリング部を、
外周の山の先端を鋭くしてモールド樹脂に融着させたこ
とを特徴とする回転センサにおけるハーネス口出し部の
シール構造。1. A sealing portion of a thermoplastic resin having adhesiveness with respect to the outer skin of a wire harness for extracting a sensor output, and a sealing portion having ridges and valleys on the outer periphery is formed in a molding resin at the rear of the sensor. In the seal structure of the harness outlet part which is buried in the liquid sealing the harness outlet part from the mold resin, the sealing part is
A seal structure for a harness outlet portion in a rotation sensor, characterized in that a tip of a mountain on the outer periphery is sharpened and fused to a molding resin.
グ部を、鋭くした山の最先端に膨らみ部を設けてあるも
のに置き換え、このシーリング部をモールド樹脂に融着
させてある回転センサにおけるハーネス口出し部のシー
ル構造。2. A harness outlet in a rotation sensor in which the sealing portion in the seal structure according to claim 1 is replaced with a bulge portion provided at the tip of a sharpened mountain, and the sealing portion is fused to a molding resin. Part seal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24596994A JPH08111260A (en) | 1994-10-12 | 1994-10-12 | Sealing structure of harness lead-out part of rotary sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24596994A JPH08111260A (en) | 1994-10-12 | 1994-10-12 | Sealing structure of harness lead-out part of rotary sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08111260A true JPH08111260A (en) | 1996-04-30 |
Family
ID=17141534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24596994A Pending JPH08111260A (en) | 1994-10-12 | 1994-10-12 | Sealing structure of harness lead-out part of rotary sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08111260A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10241782A (en) * | 1996-12-26 | 1998-09-11 | Yazaki Corp | Electric wire leading-out part waterproof structure |
| DE102009042085A1 (en) | 2008-09-30 | 2010-04-01 | Aisin Seiki Kabushiki Kaisha, Kariya-shi | Sealing connection structure and sealing connection method |
| EP2884243A1 (en) | 2013-12-10 | 2015-06-17 | Hitachi Metals, Ltd. | Physical quantity measurement sensor, method of manufacturing physical quantity measurement sensor, sealing structure of physical quantity measurement sensor and method of manufacturing cable with resin molded body |
| US9267502B2 (en) | 2012-06-08 | 2016-02-23 | Kabushiki Kaisha Toyota Jidoshokki | Motor-driven compressor |
| JP2018528432A (en) * | 2015-09-24 | 2018-09-27 | シリコン マイクロストラクチャーズ， インコーポレイテッドＳｉｌｉｃｏｎ Ｍｉｃｒｏｓｔｒｕｃｔｕｒｅｓ， Ｉｎｃ． | Manufacture of catheter sensors |
| US10641672B2 (en) | 2015-09-24 | 2020-05-05 | Silicon Microstructures, Inc. | Manufacturing catheter sensors |
| US10682498B2 (en) | 2015-09-24 | 2020-06-16 | Silicon Microstructures, Inc. | Light shields for catheter sensors |
-
1994
- 1994-10-12 JP JP24596994A patent/JPH08111260A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10241782A (en) * | 1996-12-26 | 1998-09-11 | Yazaki Corp | Electric wire leading-out part waterproof structure |
| DE102009042085A1 (en) | 2008-09-30 | 2010-04-01 | Aisin Seiki Kabushiki Kaisha, Kariya-shi | Sealing connection structure and sealing connection method |
| US9267502B2 (en) | 2012-06-08 | 2016-02-23 | Kabushiki Kaisha Toyota Jidoshokki | Motor-driven compressor |
| EP2884243A1 (en) | 2013-12-10 | 2015-06-17 | Hitachi Metals, Ltd. | Physical quantity measurement sensor, method of manufacturing physical quantity measurement sensor, sealing structure of physical quantity measurement sensor and method of manufacturing cable with resin molded body |
| US9701051B2 (en) | 2013-12-10 | 2017-07-11 | Hitachi Metals, Ltd. | Physical quantity measurement sensor, method of manufacturing physical quantity measurement sensor, sealing structure of physical quantity measurement sensor and method of manufacturing cable with resin molded body |
| JP2018528432A (en) * | 2015-09-24 | 2018-09-27 | シリコン マイクロストラクチャーズ， インコーポレイテッドＳｉｌｉｃｏｎ Ｍｉｃｒｏｓｔｒｕｃｔｕｒｅｓ， Ｉｎｃ． | Manufacture of catheter sensors |
| US10641672B2 (en) | 2015-09-24 | 2020-05-05 | Silicon Microstructures, Inc. | Manufacturing catheter sensors |
| US10682498B2 (en) | 2015-09-24 | 2020-06-16 | Silicon Microstructures, Inc. | Light shields for catheter sensors |
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