JP2000228243A - Ventilation of waterproof case - Google Patents
Ventilation of waterproof caseInfo
- Publication number
- JP2000228243A JP2000228243A JP11029450A JP2945099A JP2000228243A JP 2000228243 A JP2000228243 A JP 2000228243A JP 11029450 A JP11029450 A JP 11029450A JP 2945099 A JP2945099 A JP 2945099A JP 2000228243 A JP2000228243 A JP 2000228243A
- Authority
- JP
- Japan
- Prior art keywords
- connector
- waterproof case
- ventilation
- circuit board
- wire harness
- 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
- Casings For Electric Apparatus (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、防水ケースの内部
を大気に連通させた防水ケースの通気構造に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof case ventilation structure in which the inside of a waterproof case communicates with the atmosphere.
【0002】[0002]
【従来の技術】従来より、自動車のエンジン電子制御回
路は、雨水や湿気から保護するために防水ケース内に収
納するようにしている。この防水ケースは、エンジンル
ーム内に配置されるため、比較的大きな温度変化にさら
される。従って、防水ケースを完全な密閉構造にする
と、温度変化によって防水ケースの内圧が変化して、防
水ケースの内圧と大気圧との間に圧力差が生じる。この
圧力差が大きくなると、防水ケースが変形してシール部
の防水性が低下するおそれがあり、それによって、シー
ル部から水分が防水ケース内に浸入して回路基板にショ
ート等の故障が発生するおそれがある。2. Description of the Related Art Conventionally, an electronic engine control circuit of an automobile has been housed in a waterproof case to protect it from rainwater and moisture. Since this waterproof case is disposed in the engine room, it is exposed to a relatively large temperature change. Therefore, when the waterproof case has a completely sealed structure, the internal pressure of the waterproof case changes due to a temperature change, and a pressure difference occurs between the internal pressure of the waterproof case and the atmospheric pressure. When the pressure difference is large, the waterproof case may be deformed, and the waterproofness of the seal portion may be reduced. As a result, moisture may enter the waterproof case from the seal portion to cause a failure such as a short circuit on the circuit board. There is a risk.
【0003】そこで、防水ケースに大気に連通する通気
孔を形成することで、防水ケース内を大気圧と同一に保
つようにしたものがある。Therefore, there is a waterproof case in which a vent hole communicating with the atmosphere is formed to keep the inside of the waterproof case at the same atmospheric pressure.
【0004】[0004]
【発明が解決しようとする課題】ところで、防水ケース
の一側面部に、該防水ケース内に収容した回路基板のコ
ネクタを貫通固定し、該回路基板のコネクタにワイヤハ
ーネスのコネクタを差し込み接続するようにしている。
このワイヤハーネスのコネクタと防水ケースとの間はゴ
ムパッキン等でシールされるため、コネクタの接続部が
密閉状態となる。このため、温度変化によってコネクタ
の接続部の内部と大気圧との間に気圧差が生じる。By the way, a connector of a circuit board housed in the waterproof case is penetrated and fixed to one side of the waterproof case, and a connector of a wire harness is inserted and connected to the connector of the circuit board. I have to.
Since the space between the connector of the wire harness and the waterproof case is sealed with rubber packing or the like, the connection portion of the connector is in a sealed state. For this reason, a pressure difference occurs between the inside of the connection portion of the connector and the atmospheric pressure due to the temperature change.
【0005】特に、防水ケースが配置されるエンジンル
ーム内の温度は、走行中に約100℃程度まで上昇する
ため、エンジンルーム内が高温の状態で洗車を行うと、
洗浄水によってエンジンルーム内の温度が急激に低下し
てコネクタ内部の温度も急激に低下し、コネクタ内部が
大気圧に対して負圧になることがある。この負圧が大き
くなると、ワイヤハーネスを通してコネクタ内部に水分
を吸入してしまうおそれがあり、その吸水によってコネ
クタ内部でショートが発生するおそれがある。要する
に、上記従来構造では、防水ケースの通気孔を通して防
水ケース内を大気圧と同一に保つことができるが、コネ
クタ内部は、温度変化によって大気圧との間に気圧差が
生じてしまい、吸水によるショートが発生するおそれが
ある。[0005] In particular, since the temperature in the engine room where the waterproof case is arranged rises to about 100 ° C during running, if the car is washed in a high temperature state in the engine room,
The temperature inside the engine room is rapidly lowered by the washing water, and the temperature inside the connector is also rapidly lowered, so that the inside of the connector may become negative with respect to the atmospheric pressure. When the negative pressure increases, moisture may be sucked into the connector through the wire harness, and a short circuit may occur inside the connector due to the water absorption. In short, in the above-described conventional structure, the inside of the waterproof case can be kept at the same pressure as the atmospheric pressure through the ventilation holes of the waterproof case. A short circuit may occur.
【0006】本発明はこのような事情を考慮してなされ
たものであり、従ってその目的は、コネクタ内部と防水
ケース内とが大気圧に対して負圧になることを防止で
き、吸水によるコネクタ内部のショートと回路基板のシ
ョートの両方を防止できる防水ケースの通気構造を提供
することにある。SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object thereof is to prevent the inside of the connector and the inside of the waterproof case from becoming negative with respect to the atmospheric pressure. An object of the present invention is to provide a waterproof case ventilation structure that can prevent both an internal short circuit and a circuit board short circuit.
【0007】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明の請求項1の防水ケースの通気構造は、回路
基板のコネクタに差し込み接続する外部のコネクタに、
該コネクタの内部を大気に連通させる通気孔を形成する
と共に、該回路基板のコネクタに、外部のコネクタの内
部と防水ケースの内部を連通させる連通孔を形成したも
のである。この通気構造では、外部のコネクタの内部
が、該コネクタに形成された通気孔を通して大気に連通
されているため、温度変化によらず、外部のコネクタの
内部が大気圧と同一に保たれ、外部のコネクタの内部に
気圧差による吸水が生じることが防止され、コネクタ内
部の端子間のショートが防止される。更に、防水ケース
の内部が、回路基板のコネクタに形成された連通孔と外
部のコネクタの通気孔を通して大気に連通されているた
め、温度変化によらず、防水ケースの内部も大気圧と同
一に保たれ、防水ケース内への水分の浸入が防止され、
防水ケース内の回路基板のショートが防止される。In order to achieve the above object, the ventilation structure of the waterproof case according to the first aspect of the present invention includes an external connector which is inserted into and connected to a connector of a circuit board.
A vent hole for communicating the inside of the connector with the atmosphere is formed, and a communicating hole for communicating the inside of the external connector and the inside of the waterproof case is formed in the connector of the circuit board. In this ventilation structure, since the inside of the external connector is communicated with the atmosphere through the vent formed in the connector, the inside of the external connector is kept at the same atmospheric pressure regardless of the temperature change. The occurrence of water absorption due to a pressure difference inside the connector is prevented, and a short circuit between terminals inside the connector is prevented. Furthermore, since the inside of the waterproof case is communicated with the atmosphere through the communication hole formed in the connector of the circuit board and the vent hole of the external connector, the inside of the waterproof case is kept at the same atmospheric pressure regardless of the temperature change. It is kept, preventing intrusion of moisture into the waterproof case,
Short circuit of the circuit board in the waterproof case is prevented.
【0008】ところで、防水ケースは、収容する回路基
板のサイズ、形状、種類に応じて設計されるため、種々
のサイズ、形状、材質の防水ケースが存在するが、コネ
クタは、異なるサイズ、形状、材質の防水ケースに対し
ても共通のコネクタが用いられることが多い。従って、
本発明のように、共通部品化された2つのコネクタに通
気孔と連通孔を形成した方が、種類の多い防水ケースに
通気孔を形成する場合と比較して、安いコストで防水ケ
ースに通気性を持たせることができ、低コスト化の要求
も満たすことができる。Since the waterproof case is designed according to the size, shape and type of the circuit board to be housed, there are waterproof cases of various sizes, shapes and materials. A common connector is often used for a waterproof case made of a material. Therefore,
Forming ventilation holes and communication holes in two connectors that are made into a common component as in the present invention allows ventilation at a lower cost at a lower cost than forming ventilation holes in many types of waterproof cases. And can meet the demand for cost reduction.
【0009】この場合、請求項2のように、外部のコネ
クタの通気孔に、通気性と防水性とを兼ね備えた撥水フ
ィルタを設けることが好ましい。このようにすれば、外
部のコネクタの通気孔からの水分の浸入を撥水フィルタ
によって確実に防止できる。但し、本発明は、撥水フィ
ルタを設けた構成に限定されず、通気孔の形状を水分が
浸入しにくい形状としたり、或は、通気孔の位置を水分
が浸入しにくい位置に設けることで、通気孔からの水分
の浸入を防止するようにしても良い。In this case, it is preferable to provide a water-repellent filter having both air permeability and waterproofness in the vent hole of the external connector. In this case, the intrusion of moisture from the vent hole of the external connector can be reliably prevented by the water-repellent filter. However, the present invention is not limited to the configuration in which the water-repellent filter is provided. Alternatively, the intrusion of moisture from the ventilation holes may be prevented.
【0010】また、請求項3のように、外部のコネクタ
に複数の通気孔を形成しても良い。このようにすれば、
1つの通気孔のみで通気性を確保する場合と比較して、
各通気孔の孔径を小さくできるため、各通気孔に異物が
入り込みにくくなると共に、万一、1つの通気孔が異物
で孔詰まりしても、他の通気孔で通気性を確実に確保で
き、耐久性を向上できる。Further, a plurality of ventilation holes may be formed in the external connector. If you do this,
Compared to the case of securing ventilation with only one ventilation hole,
Since the diameter of each ventilation hole can be reduced, foreign substances are less likely to enter into each ventilation hole, and even if one ventilation hole is clogged with a foreign substance, it is possible to reliably secure air permeability with another ventilation hole, Durability can be improved.
【0011】また、請求項4のように、通気孔をコネク
タの端子の貫通方向と同じ方向に貫通するように形成す
ると良い。このようにすれば、コネクタの成形を簡単な
2分割型で行うことができ、コネクタの成形コストを低
減できる。Further, it is preferable that the vent hole is formed so as to penetrate in the same direction as the penetrating direction of the terminal of the connector. With this configuration, the molding of the connector can be performed with a simple two-part mold, and the molding cost of the connector can be reduced.
【0012】[0012]
【発明の実施の形態】以下、本発明の実施形態(1)を
図1乃至図3に基づいて説明する。図1及び図3に示す
防水ケース11は、ケース本体12と、その下面開口部
を塞ぐカバー13とから構成され、このカバー13に形
成された係合片14を、ケース本体12に形成された被
係合部15に係合させることで、カバー13がケース本
体12に固定されている。この防水ケース11内には、
エンジン電子制御回路等を実装した回路基板16が収納
されている。この回路基板16には、オス型のコネクタ
17が横向きに設けられ、このコネクタ17がケース本
体12の側面部に形成されたコネクタ嵌合部18に内側
から嵌合固定されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment (1) of the present invention will be described below with reference to FIGS. The waterproof case 11 shown in FIGS. 1 and 3 includes a case body 12 and a cover 13 for closing an opening on the lower surface of the case body. An engaging piece 14 formed on the cover 13 is formed on the case body 12. The cover 13 is fixed to the case body 12 by engaging with the engaged portion 15. In this waterproof case 11,
A circuit board 16 on which an engine electronic control circuit and the like are mounted is housed. A male connector 17 is provided on the circuit board 16 in a horizontal direction, and the connector 17 is fitted and fixed from inside to a connector fitting portion 18 formed on a side surface of the case body 12.
【0013】一方、防水ケース11内のエンジン電子制
御回路に接続する信号線や電源線となるワイヤハーネス
19の先端部には、樹脂製のメス型のコネクタ20が設
けられている。このワイヤハーネス19のコネクタ20
を防水ケース11のコネクタ嵌合部18に外側から嵌め
込むことで、ワイヤハーネス19のコネクタ20の端子
21を回路基板16のコネクタ17の端子22に差し込
み接続するようになっている。ワイヤハーネス19のコ
ネクタ20と防水ケース11のコネクタ嵌合部18との
間は、ゴムパッキン(図示せず)等によりシールされて
いる。On the other hand, a female connector 20 made of resin is provided at a distal end of a wire harness 19 serving as a signal line and a power supply line connected to an engine electronic control circuit in the waterproof case 11. Connector 20 of this wire harness 19
The terminal 21 of the connector 20 of the wire harness 19 is inserted into and connected to the terminal 22 of the connector 17 of the circuit board 16 by fitting the terminal 21 into the connector fitting portion 18 of the waterproof case 11 from the outside. The space between the connector 20 of the wire harness 19 and the connector fitting portion 18 of the waterproof case 11 is sealed by rubber packing (not shown) or the like.
【0014】2つのコネクタ17,20は、共にハウジ
ング部が樹脂により形成され、更に、ワイヤハーネス1
9のコネクタ20には、該コネクタ20の内部を大気に
連通するための複数の通気孔23が該コネクタ20の端
子21の貫通方向と同じ方向に貫通するように形成され
ている。これら複数の通気孔23には、通気性と防水性
とを兼ね備えた撥水フィルタ24が内側から溶着等によ
り組み付けられている。この撥水フィルタ24は、例え
ばポリテトラフロロエチレンの多孔質構造体によって形
成されている。Each of the two connectors 17 and 20 has a housing portion formed of resin, and further has a wire harness 1.
A plurality of ventilation holes 23 for communicating the inside of the connector 20 with the atmosphere are formed in the connector 20 of No. 9 so as to penetrate in the same direction as the direction in which the terminals 21 of the connector 20 penetrate. A water-repellent filter 24 having both air permeability and waterproofness is assembled to the plurality of ventilation holes 23 from the inside by welding or the like. The water repellent filter 24 is formed of, for example, a porous structure of polytetrafluoroethylene.
【0015】一方、回路基板16のコネクタ17には、
ワイヤハーネス19のコネクタ20の内部と防水ケース
11の内部を連通させる1個又は複数個の連通孔25が
端子22の向きと同方向に貫通するように形成されてい
る。更に、ワイヤハーネス19のコネクタ20と回路基
板16のコネクタ17との間に形成されるコネクタ20
内部の空間全体が連通孔25に連通するように形成され
ている。換言すれば、コネクタ20内部の空間が分離さ
れた複数の密閉空間とならないように形成されている。On the other hand, the connector 17 of the circuit board 16
One or a plurality of communication holes 25 for communicating the inside of the connector 20 of the wire harness 19 and the inside of the waterproof case 11 are formed so as to penetrate in the same direction as the direction of the terminal 22. Furthermore, a connector 20 formed between the connector 20 of the wire harness 19 and the connector 17 of the circuit board 16
The entire internal space is formed so as to communicate with the communication hole 25. In other words, it is formed so that the space inside the connector 20 does not become a plurality of separated closed spaces.
【0016】以上説明した実施形態(1)によれば、ワ
イヤハーネス19のコネクタ20の内部が、該コネクタ
20に形成された通気孔23を通して大気に連通されて
いるため、温度変化によらず、ワイヤハーネス19のコ
ネクタ20の内部が大気圧と同一に保たれ、該コネクタ
20の内部に気圧差による吸水が生じることが防止さ
れ、コネクタ20内部の端子21間のショートが防止さ
れる。更に、防水ケース11の内部が、回路基板16の
コネクタ17の連通孔25と、ワイヤハーネス19のコ
ネクタ20の通気孔23とによって大気に連通されてい
るため、温度変化によらず、防水ケース11の内部も大
気圧と同一に保たれ、防水ケース11内への水分の浸入
が防止され、防水ケース11内の回路基板16のショー
トが防止される。According to the embodiment (1) described above, the inside of the connector 20 of the wire harness 19 is communicated with the atmosphere through the air holes 23 formed in the connector 20, so that the inside of the connector 20 does not depend on the temperature change. The inside of the connector 20 of the wire harness 19 is kept at the same pressure as the atmospheric pressure, so that water absorption due to a pressure difference inside the connector 20 is prevented, and a short circuit between the terminals 21 inside the connector 20 is prevented. Further, since the inside of the waterproof case 11 is communicated with the atmosphere by the communication hole 25 of the connector 17 of the circuit board 16 and the ventilation hole 23 of the connector 20 of the wire harness 19, the waterproof case 11 is not affected by a temperature change. Is maintained at the same level as the atmospheric pressure, so that the intrusion of moisture into the waterproof case 11 is prevented, and the short circuit of the circuit board 16 in the waterproof case 11 is prevented.
【0017】しかも、共通部品化された2つのコネクタ
20,17に通気孔23と連通孔25を形成するため、
サイズ、形状、材質の異なる種々の防水ケース11に通
気孔を形成する場合と比較して、安いコストで防水ケー
ス11に通気性を持たせることができ、低コスト化の要
求も満たすことができる。Moreover, since the air hole 23 and the communication hole 25 are formed in the two connectors 20 and 17 which are made into a common component,
The waterproof case 11 can be provided with air permeability at a lower cost as compared with the case where vents are formed in various waterproof cases 11 having different sizes, shapes, and materials, and the demand for cost reduction can be satisfied. .
【0018】更に、ワイヤハーネス19のコネクタ20
の通気孔23に撥水フィルタ24を設けたので、該コネ
クタ20の通気孔23からの水分の浸入を撥水フィルタ
24によって確実に防止することができる。しかも、コ
ネクタ20は樹脂で形成されているため、撥水フィルタ
24を溶着により簡単に組み付けることができる利点も
ある(防水ケース11がアルミ等の金属で形成されてい
ると、仮に防水ケース11に通気孔を形成しても、撥水
フィルタを溶着することは困難である)。Further, the connector 20 of the wire harness 19
Since the water repellent filter 24 is provided in the vent hole 23 of the connector 20, the intrusion of moisture from the vent hole 23 of the connector 20 can be reliably prevented by the water repellent filter 24. Moreover, since the connector 20 is formed of resin, there is an advantage that the water-repellent filter 24 can be easily assembled by welding (if the waterproof case 11 is formed of a metal such as aluminum, the waterproof case 11 is temporarily attached to the waterproof case 11). Even if the air holes are formed, it is difficult to weld the water-repellent filter).
【0019】但し、本発明は、撥水フィルタ24を設け
た構成に限定されず、通気孔23の形状を水分が浸入し
にくい形状としたり、或は、通気孔23の位置を水分が
浸入しにくい位置に設けることで、通気孔23からの水
分の浸入を防止するようにしても良く、この場合には、
撥水フィルタを設けなくても良い。However, the present invention is not limited to the configuration in which the water repellent filter 24 is provided. By providing it in a difficult position, it is possible to prevent the intrusion of moisture from the vent hole 23. In this case,
It is not necessary to provide a water-repellent filter.
【0020】また、上記実施形態(1)では、ワイヤハ
ーネス19のコネクタ20に複数の通気孔23を形成し
たので、1つの通気孔のみで通気性を確保する場合と比
較して、各通気孔23の孔径を小さくできる。このた
め、各通気孔23に異物が入り込みにくくなると共に、
万一、1つの通気孔23が異物で孔詰まりしても、他の
通気孔23で通気性を確実に確保でき、耐久性を向上で
きる。但し、本発明は、1つの通気孔のみで通気性を確
保する構成としても良く、この場合でも、本発明の所期
の目的を十分に達成できる。Further, in the embodiment (1), since a plurality of ventilation holes 23 are formed in the connector 20 of the wire harness 19, each ventilation hole is compared with the case where only one ventilation hole is used to secure the air permeability. 23 can be reduced in diameter. For this reason, it becomes difficult for a foreign substance to enter into each ventilation hole 23,
Even if one vent hole 23 is clogged with a foreign substance, the other vent holes 23 can reliably ensure air permeability and improve durability. However, the present invention may have a configuration in which air permeability is ensured with only one vent hole, and even in this case, the intended object of the present invention can be sufficiently achieved.
【0021】また、通気孔23をコネクタ20の端子2
1の貫通方向と同じ方向に貫通するように形成したの
で、コネクタ20の成形を簡単な2分割型で行うことが
でき、コネクタ20の成形コストを低減できる。The ventilation hole 23 is connected to the terminal 2 of the connector 20.
Since the connector 20 is formed so as to penetrate in the same direction as the penetration direction, the connector 20 can be molded by a simple two-part mold, and the molding cost of the connector 20 can be reduced.
【0022】但し、本発明は、通気孔をコネクタ20の
端子21の貫通方向と異なる方向に貫通するように形成
しても良く、この場合でも、本発明の所期の目的を十分
に達成できる。However, in the present invention, the ventilation hole may be formed so as to penetrate in a direction different from the direction in which the terminal 21 of the connector 20 penetrates. Even in this case, the intended object of the present invention can be sufficiently achieved. .
【0023】例えば、図4に示す本発明の実施形態
(2)では、ワイヤハーネス19のコネクタ20の上部
に、該コネクタ20の内部を大気に連通するための1個
又は複数個の通気孔31を形成し、この通気孔31の入
口部に撥水フィルタ32を溶着等により組み付けてい
る。そして、防水ケース11のコネクタ嵌合部18に
は、撥水フィルタ32の真上の位置に、通気用の孔33
を形成している。その他の構成は、前記実施形態(1)
と同じである。For example, in the embodiment (2) of the present invention shown in FIG. 4, one or a plurality of ventilation holes 31 for communicating the inside of the connector 20 with the atmosphere are provided above the connector 20 of the wire harness 19. And a water-repellent filter 32 is attached to the inlet of the ventilation hole 31 by welding or the like. In the connector fitting portion 18 of the waterproof case 11, a ventilation hole 33 is provided just above the water-repellent filter 32.
Is formed. Other configurations are the same as those of the embodiment (1).
Is the same as
【0024】このような構成の実施形態(2)において
も、ワイヤハーネス19のコネクタ20の通気孔31と
回路基板16のコネクタ17の連通孔25とによって、
ワイヤハーネス19のコネクタ20の内部と防水ケース
11内の両方を大気圧と同一に保つことができ、吸水に
よるコネクタ20内部のショートと回路基板16のショ
ートの両方を防止できる。Also in the embodiment (2) having such a configuration, the communication hole 25 of the connector 17 of the circuit board 16 and the communication hole 25 of the connector 20 of the wiring harness 19 are used.
Both the inside of the connector 20 of the wire harness 19 and the inside of the waterproof case 11 can be kept at the same atmospheric pressure, and both short circuit inside the connector 20 due to water absorption and short circuit of the circuit board 16 can be prevented.
【0025】尚、本発明は、エンジン電子制御回路を収
納する防水ケースに限定されず、車両に搭載される種々
の電子制御回路を収納する防水ケースや、車両以外の装
置の電子制御回路を収納する防水ケースに適用すること
ができる。It should be noted that the present invention is not limited to the waterproof case containing the engine electronic control circuit, but includes the waterproof case containing various electronic control circuits mounted on the vehicle and the electronic control circuit of devices other than the vehicle. It can be applied to waterproof case.
【図1】本発明の実施形態(1)における防水ケースの
通気構造を示す部分縦断面図FIG. 1 is a partial longitudinal sectional view showing a ventilation structure of a waterproof case according to an embodiment (1) of the present invention.
【図2】ワイヤハーネスのコネクタの斜視図FIG. 2 is a perspective view of a connector of a wire harness.
【図3】防水ケース全体の外観斜視図FIG. 3 is an external perspective view of the entire waterproof case.
【図4】本発明の実施形態(2)における防水ケースの
通気構造を示す部分縦断面図FIG. 4 is a partial longitudinal sectional view showing a ventilation structure of a waterproof case according to the embodiment (2) of the present invention.
11…防水ケース、12…ケース本体、13…カバー、
16…回路基板、17…コネクタ、18…コネクタ嵌合
部、19…ワイヤハーネス、20…コネクタ、21,2
2…端子、23…通気孔、24…撥水フィルタ、25…
連通孔、31…通気孔、32…撥水フィルタ。11: waterproof case, 12: case body, 13: cover,
16 circuit board, 17 connector, 18 connector fitting portion, 19 wire harness, 20 connector 21, 21
2 ... terminal, 23 ... vent, 24 ... water-repellent filter, 25 ...
Communication hole, 31: vent hole, 32: water-repellent filter.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高野 展裕 愛知県刈谷市昭和町1丁目1番地 株式会 社デンソー内 (72)発明者 伊藤 康男 愛知県刈谷市昭和町1丁目1番地 株式会 社デンソー内 Fターム(参考) 4E360 AB14 BD02 BD10 GA29 GB99 5E087 EE02 EE14 FF03 FF06 FF12 HH01 HH02 LL02 LL17 MM02 MM05 QQ04 RR12 RR31 RR49 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Nobuhiro Takano 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside Denso Corporation (72) Inventor Yasuo Ito 1-1-1, Showa-cho, Kariya-shi, Aichi Co., Ltd. F term in DENSO (reference) 4E360 AB14 BD02 BD10 GA29 GB99 5E087 EE02 EE14 FF03 FF06 FF12 HH01 HH02 LL02 LL17 MM02 MM05 QQ04 RR12 RR31 RR49
Claims (4)
に、該回路基板に設けられたコネクタを前記防水ケース
の一側面部に貫通固定し、該回路基板のコネクタに、外
部のコネクタを差し込み接続するものにおいて、 前記外部のコネクタに、該コネクタの内部を大気に連通
させる通気孔を形成すると共に、前記回路基板のコネク
タに、前記外部のコネクタの内部と前記防水ケースの内
部を連通させる連通孔を形成したことを特徴とする防水
ケースの通気構造。1. A circuit board is accommodated in a waterproof case, a connector provided on the circuit board is fixed through one side of the waterproof case, and an external connector is inserted and connected to the connector of the circuit board. A communication hole for communicating the inside of the external connector and the inside of the waterproof case with the connector of the circuit board, while forming a ventilation hole for communicating the inside of the connector with the atmosphere in the external connector. The ventilation structure of the waterproof case, characterized by forming a.
備えた撥水フィルタを設けたことを特徴とする請求項1
に記載の防水ケースの通気構造。2. A water-repellent filter having both air permeability and waterproofness is provided in said vent hole.
The ventilation structure of the waterproof case according to 1.
数個形成したことを特徴とする請求項1又は2に記載の
防水ケースの通気構造。3. The ventilation structure for a waterproof case according to claim 1, wherein a plurality of the ventilation holes are formed in the external connector.
子の貫通方向と同じ方向に貫通していることを特徴とす
る請求項1乃至3のいずれかに記載の防水ケースの通気
構造。4. The ventilation structure for a waterproof case according to claim 1, wherein the ventilation hole penetrates in the same direction as the penetration direction of the terminal of the external connector.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11029450A JP2000228243A (en) | 1999-02-08 | 1999-02-08 | Ventilation of waterproof case |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11029450A JP2000228243A (en) | 1999-02-08 | 1999-02-08 | Ventilation of waterproof case |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2000228243A true JP2000228243A (en) | 2000-08-15 |
Family
ID=12276460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11029450A Pending JP2000228243A (en) | 1999-02-08 | 1999-02-08 | Ventilation of waterproof case |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2000228243A (en) |
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