JPH04170098A - Waterproof and dropproof structure of case - Google Patents

Waterproof and dropproof structure of case

Info

Publication number
JPH04170098A
JPH04170098A JP29824190A JP29824190A JPH04170098A JP H04170098 A JPH04170098 A JP H04170098A JP 29824190 A JP29824190 A JP 29824190A JP 29824190 A JP29824190 A JP 29824190A JP H04170098 A JPH04170098 A JP H04170098A
Authority
JP
Japan
Prior art keywords
case
waterproof
hole
gap
cases
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
Application number
JP29824190A
Other languages
Japanese (ja)
Inventor
Shunichi Itano
俊一 板野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP29824190A priority Critical patent/JPH04170098A/en
Publication of JPH04170098A publication Critical patent/JPH04170098A/en
Pending legal-status Critical Current

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  • Telephone Set Structure (AREA)
  • Casings For Electric Apparatus (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

PURPOSE:To get sure waterproof and dropproof effect by simple structure by providing a tapered gap, which is narrow a little to the outside of a case and wide a little to the inside of it, at the joint of cases. CONSTITUTION:A tapered gap 4, which is narrow a little to the outsides of cases 1 and 2 and wide a little to the insides of the them, are provided at the joint 3 of the upper case 1 and the lower case 2 of an interphone. By doing it this way in case that waterdrop enter the gap 4, the waterdrop 5 contacts with the inwall of the gap 4 at a contact angle of alpha(0<alpha<90 deg.), and also by the capillary phenomena based on the surface tension, it tends to move to the outsides of the cases 1 and 2. By this property, the waterdrop 5 never enters as far as the insides of the cases 1 and 2. Hereby, low-cost and sure waterproof and dropproof effect can be gotten with a simple structure.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、雨などの水のかかる環境下で使用する機器の
ケースにおける防水・防滴構造、特にそのケースの継目
と孔における防水・防滴構造に関する。
Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a waterproof/splash-proof structure in the case of equipment used in environments where water is splashed by rain, etc. Concerning droplet structure.

[従来の技術] インターホンなど、屋外に設置して使用する機器では、
内部の電子装置等を雨水から守るために、機器のケース
を防水・防滴構造として、そのケースの継目や孔からの
水滴の浸入を防止している。
[Conventional technology] For equipment installed and used outdoors, such as intercoms,
In order to protect internal electronic devices from rainwater, the case of the device is made waterproof and drip-proof to prevent water droplets from entering through the seams and holes in the case.

第6図(a)、  (b)は、インターホンの上ケース
(11)と下ケース(12)との継目(13)における
従来の防水・防滴構造を示す平断面図である。
FIGS. 6(a) and 6(b) are plan sectional views showing a conventional waterproof/splash-proof structure at a joint (13) between an upper case (11) and a lower case (12) of an interphone.

図のように従来は、継目(13)を密着状態に形成する
とともに、外側からコーキング材(14)で密封したり
(第6図a)、あるいはシール材(15)を介在させた
り(第6図b)して、防水・防滴を行っていた。
As shown in the figure, in the past, the joint (13) was formed in a tight state, and the seam (13) was sealed from the outside with a caulking material (14) (Fig. 6a), or a sealing material (15) was interposed (Fig. 6). Figure b) was used to make it waterproof and drip-proof.

またff17図は、インターホンの上ケース(11)に
設けられたスピーカ用の孔(16)における従来の防水
・防滴構造を示す側断面図である。
Further, FIG. ff17 is a side sectional view showing a conventional waterproof and drip-proof structure of a speaker hole (16) provided in an upper case (11) of an interphone.

図のようにこの孔(16)は、上ケース(11)の裏面
に取付けられたスピーカ(17)の音量を確保するため
に多数設けられるものである。そしてこの孔(16)の
場合には、雨水の浸入を防ぐように、6孔(16)を、
ケース(11)の外寄りで低く内寄りで高いクランク状
に形成するとともに、水平方向に長く、上下に並べて形
成している。
As shown in the figure, a large number of holes (16) are provided to ensure the volume of the speaker (17) attached to the back surface of the upper case (11). In the case of this hole (16), hole 6 (16) is
They are formed in the shape of a crank, low on the outside of the case (11) and high on the inside, long in the horizontal direction, and arranged vertically.

さらに、それだけでは防水中防滴が不確実であることか
ら、孔(16)より浸入した雨水からスピーカ(17)
を保護するために、防水シート(18)でスピーカ(1
7)の前面を覆うとともに、上ケース(11)裏面のス
ピーカ支持突部(19)の下端に水抜孔(20)を形成
している。
Furthermore, since drip-proofing during waterproofing is uncertain with this alone, rainwater that has entered through the hole (16) can be protected from the speaker (17).
Cover the speaker (1) with a waterproof sheet (18) to protect it.
7), and a drain hole (20) is formed at the lower end of the speaker support protrusion (19) on the back surface of the upper case (11).

【発明が解決しようとする課題] しかし上記従来の継目(13)における防水・防滴構造
では、密着状態とするための高い部品精度を要すること
と、コーキング材(14)やシール材(15)を使用す
ることから、それだけコスト高になるとともに、組立作
業性も悪いという問題があった。
[Problems to be Solved by the Invention] However, the conventional waterproof/splash-proof structure at the joint (13) requires high component precision to achieve a close contact, and the caulking material (14) and sealing material (15) However, the use of the same method resulted in higher costs and poor assembly workability.

また上記従来のスピーカ用の孔(16)における防水・
防滴構造についても、孔(16)の形状を複雑にしたり
、さらにそれだけでは防水・防滴が不確実であるために
、スピーカ保護用の防水シー)(18)や水抜孔(20
)を設けたりすることから、コスト高になるとともに、
生産性が悪いという問題があった。
In addition, waterproofing and waterproofing of the conventional speaker hole (16)
Regarding the drip-proof structure, the shape of the hole (16) has to be complicated, and since it is not sure whether it is waterproof or drip-proof, we have added a waterproof sheet (18) to protect the speaker and a drainage hole (20).
), which increases costs and
There was a problem with poor productivity.

本発明は、これらの問題点を解決するためになされたも
ので、単純な構造でコストがかからず、しかも確実な防
水・防滴効果の得られる防水・防滴構造を提供すること
を目的とする。
The present invention has been made to solve these problems, and aims to provide a waterproof/splash-proof structure that has a simple structure, is inexpensive, and can provide reliable waterproof/splash-proof effects. shall be.

[課題を解決するための手段] 上記目的を達成するために、本発明に係る防水・防滴構
造では次のような構造とした。
[Means for Solving the Problems] In order to achieve the above object, the waterproof and drip-proof structure according to the present invention has the following structure.

即ち、ケースの継目については、その継目に、ケースの
外寄りで狭く内寄りで広いテーパ状の間隙を設けた。
That is, a tapered gap is provided at the joint of the case, which is narrower on the outer side of the case and wider on the inner side of the case.

またケースの孔については、その孔を、ケースの外寄り
で狭く内寄りで広いテーパ状に形成した。
Furthermore, the hole in the case is tapered to be narrower on the outside of the case and wider on the inside.

[作用] 上記構造では、ケースの継目の間隙、あるいはケースの
孔に水滴が入り込んだ場合、その水滴は、表面張力に基
づく毛細管現象によって、間隙あるいは孔の狭い方へ、
つまりケースの外方へ向かって移動しようとする。この
性質により、水滴はケースの内部まで浸入することはな
い。
[Function] In the above structure, when a water droplet enters the gap between the joints of the case or the hole in the case, the water droplet flows toward the narrower side of the gap or hole due to capillary action based on surface tension.
In other words, it tries to move towards the outside of the case. This property prevents water droplets from penetrating into the interior of the case.

[実施例] 以下、図面に基づいて本発明の詳細な説明する。[Example] Hereinafter, the present invention will be described in detail based on the drawings.

j11図は、インターホンの上ケース(1)と下ケース
(2)との継目(3)における本発明に係る防水・防滴
構造を示す平断面図である。
Figure j11 is a plan cross-sectional view showing the waterproof and drip-proof structure according to the present invention at the joint (3) between the upper case (1) and lower case (2) of the intercom.

図のようにこの継目(3)における防水・防滴構造の特
徴は、その継目(3)に、ケース(1)。
As shown in the figure, the feature of the waterproof/splash-proof structure at this joint (3) is that the case (1) is attached to the joint (3).

(2)の外寄りで狭く、内寄りで広いテーパ状の間隙(
4)を設けた点にある。
(2) A tapered gap that is narrow on the outside and wide on the inside (
4).

上記構造では、第2図の説明図に示すように、間隙(4
)に水滴(5)が入り込んだ場合、その水滴(5)は、
間隙(4)の内壁面に接触角α(0くαく90度)で接
触するとともに、表面張力に基づく毛細管現象によって
、間隙(4)の狭い方へ、つまりケース(1)、(2)
の外方へ向かって移動しようとする。この性質により、
水滴(5)はケース(1)、  (2)の内部まで浸入
することはない。
In the above structure, as shown in the explanatory diagram of FIG.
), the water droplet (5) becomes
It comes into contact with the inner wall surface of the gap (4) at a contact angle α (0 × α × 90 degrees), and due to capillary action based on surface tension, it moves toward the narrower side of the gap (4), that is, in cases (1) and (2).
attempts to move outward. Due to this property,
Water droplets (5) do not penetrate into the cases (1) and (2).

即ち、継目(3)に、敢えて上述のようなテーパ状の間
Fl!(4)を設けることにより、b−キング材やシー
ル材を用いることなく、継目(3)における防水・防滴
を確実に行うことができる。しかも継目(3)を密着状
態にしないため、高い部品精度を必要としない。
That is, the seam (3) has the above-mentioned tapered gap Fl! By providing (4), the seam (3) can be reliably waterproof and drip-proof without using a b-king material or a sealing material. Moreover, since the joint (3) is not brought into close contact, high component accuracy is not required.

一方、第3図はインターホンの上ケース(1)に設けら
れたスピーカ用の孔(6)における本発明に係る防水・
防滴構造を示す平断面図、また第4図はインターホンの
全体を示す斜視図である。
On the other hand, FIG. 3 shows the waterproofing according to the present invention in the speaker hole (6) provided in the upper case (1) of the interphone.
FIG. 4 is a plan sectional view showing the drip-proof structure, and a perspective view showing the entire intercom.

図のようにこの孔(6)は、スピーカ(7)の音量を確
保するために、上下方向に長く、横方向に多数並べて設
けられたもので、その防水・防滴構造の特徴は、6孔(
6)を、上ケース(1)の外寄りで狭く内寄りで広いテ
ーパ状に形成した点にある。
As shown in the figure, these holes (6) are long in the vertical direction and arranged horizontally in large numbers in order to ensure the volume of the speaker (7). Hole (
6) is formed into a tapered shape that is narrower on the outer side of the upper case (1) and wider on the inner side.

孔(6)をこのような形状とすることにより、第5図の
説明図に示すように、この孔(6)に水滴(5)が入り
込んだ際には、その水滴(5)は、上述の継目(3)の
場合と同様に、孔(6)の内壁面に接触角α(0くα<
90度)で接触するとともに、表面張力に基づく毛細管
現象によって、孔(6)の狭い方へ、つまり上ケース(
1)の外方へ向かって移動しようとする。この性質によ
り、水滴(5)は上ケース(1)の内部まで浸入するこ
とはない。従って、確実な防水・防滴効果が得られ、従
来例のようなスピーカ保護用の防水シートや水抜孔も不
要となる。
By making the hole (6) into such a shape, as shown in the explanatory diagram of FIG. 5, when a water droplet (5) enters the hole (6), the water droplet (5) As in the case of joint (3), the contact angle α (0 α <
90 degrees), and by capillary action based on surface tension, towards the narrow side of the hole (6), that is, the upper case (
Try to move outward from 1). Due to this property, water droplets (5) do not penetrate into the upper case (1). Therefore, a reliable waterproof and drip-proof effect can be obtained, and there is no need for a waterproof sheet for protecting the speaker or a water drain hole as in the conventional example.

また、本実施例のように孔(6)を上下方向に長く形成
すれば、孔(6)内の水滴(5)が自重で降下するため
に孔(6)が塞がれ難くなり、スピーカ(7)の音量の
低下を防ぐことができる。
Furthermore, if the hole (6) is formed to be long in the vertical direction as in this embodiment, the water droplet (5) in the hole (6) will fall under its own weight, making it difficult to block the hole (6). (7) The decrease in volume can be prevented.

なお、上記スピーカ用の孔(6)における防水・防滴構
造は、他の孔、例えば第4図に示した上ケース(1)の
マイク用の孔(8)などにも適用し得ることは言うまで
もない。
Note that the waterproof/splash-proof structure of the speaker hole (6) can also be applied to other holes, such as the microphone hole (8) of the upper case (1) shown in FIG. Needless to say.

さらに本発明に係る防水・防滴構造は、インク−ホンの
ケースに限らず、種々の機器のケースに適用し得るもの
である。
Furthermore, the waterproof and drip-proof structure according to the present invention can be applied not only to cases of ink-phones but also to cases of various devices.

[発明の効果] 以上の説明のように、本発明に係るケースの防水・防滴
構造によれば、ケースの継目に、ケースの外寄りで狭く
内寄りで広いテーパ状°の間隙を設ける、またケースの
孔を、ケースの外寄りで狭く内寄りで広いテーパ状に形
成するといった単純な構造だけで、コーキング材やシー
ル材、あるいは防水シートといったものを用いることな
く、確実な防水・防滴効果が得られる。その結果、コス
トが低減されるとともに、組立作業性、生産性が向上す
る。
[Effects of the Invention] As described above, according to the waterproof/splash-proof structure of the case according to the present invention, a tapered gap is provided at the joint of the case, narrower on the outer side of the case and wider on the inner side of the case. In addition, with a simple structure in which the holes in the case are tapered to be narrower on the outside of the case and wider on the inside, reliable waterproofing and drip-proofing can be achieved without using caulking, sealing materials, or waterproof sheets. Effects can be obtained. As a result, costs are reduced and assembly workability and productivity are improved.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係るケースの継目の防水・防滴構造を
示す平断面図、第2図は継目の間隙における防水・防滴
作用の説明図、第3図は本発明に係るケースの孔の防水
・防滴構造を示す平断面図、第4図は実施例におけるイ
ンターホンの全体を示す斜視図、第5図は本発明に係る
ケースの孔における防水・防滴作用の説明図、第6図(
a)。 (b)は従来のケースの継目の防水・防滴構造を示す平
断面図、第7図は従来のケースの孔の防水・防滴構造を
示す側断面図である。 図中、(1)は上ケース、(2)は下ケース、(3)は
継目、(4)は間隙、(5)は水滴、(6)は孔である
。 なお、図中同一符号は同一または相当部分を示す。 代理人 弁理士 吉 1)研 二 (外2名) 1:上ケース 2:1サース 第1図 第2図 第3図 第4図 第6図 第7図
FIG. 1 is a plan cross-sectional view showing the waterproof and drip-proof structure of the joint of the case according to the present invention, FIG. FIG. 4 is a perspective view showing the entire intercom according to the embodiment; FIG. Figure 6 (
a). (b) is a plan sectional view showing the waterproof and drip-proof structure of the joint of a conventional case, and FIG. 7 is a side sectional view showing the waterproof and drip-proof structure of the hole of the conventional case. In the figure, (1) is the upper case, (2) is the lower case, (3) is the joint, (4) is the gap, (5) is the water droplet, and (6) is the hole. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Patent attorney Yoshi 1) Kenji (2 others) 1: Upper case 2: 1 Sars Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 6 Fig. 7

Claims (2)

【特許請求の範囲】[Claims] (1)機器のケースに設けられた継目からの水滴の浸入
を防止する防水・防滴構造において、上記継目に、ケー
スの外寄りで狭く内寄りで広いテーパ状の間隙を設けた
ことを特徴とするケースの防水・防滴構造。
(1) A waterproof/splash-proof structure that prevents water droplets from entering through the joints provided in the case of the device, characterized in that the joints have tapered gaps that are narrower on the outside of the case and wider on the inside. Waterproof and drip-proof construction of the case.
(2)機器のケースに設けられた孔からの水滴の浸入を
防止する防水・防滴構造において、 上記孔を、ケースの外寄りで狭く内寄りで広いテーパ状
に形成したことを特徴とするケースの防水・防滴構造。
(2) A waterproof/splash-proof structure that prevents water droplets from entering through a hole provided in a device case, characterized in that the hole is formed in a tapered shape that is narrower on the outside of the case and wider on the inside. Waterproof and drip-proof construction of the case.
JP29824190A 1990-11-01 1990-11-01 Waterproof and dropproof structure of case Pending JPH04170098A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29824190A JPH04170098A (en) 1990-11-01 1990-11-01 Waterproof and dropproof structure of case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29824190A JPH04170098A (en) 1990-11-01 1990-11-01 Waterproof and dropproof structure of case

Publications (1)

Publication Number Publication Date
JPH04170098A true JPH04170098A (en) 1992-06-17

Family

ID=17857066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29824190A Pending JPH04170098A (en) 1990-11-01 1990-11-01 Waterproof and dropproof structure of case

Country Status (1)

Country Link
JP (1) JPH04170098A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01165733U (en) * 1988-05-16 1989-11-20
EP1276361A2 (en) * 1995-01-27 2003-01-15 Mitsubishi Denki Kabushiki Kaisha Waterproof casing structure for electronic equipment
JP2007116620A (en) * 2005-10-24 2007-05-10 Matsushita Electric Works Ltd Intercom
JP2007124081A (en) * 2005-10-26 2007-05-17 Matsushita Electric Works Ltd Intercom unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01165733U (en) * 1988-05-16 1989-11-20
EP1276361A2 (en) * 1995-01-27 2003-01-15 Mitsubishi Denki Kabushiki Kaisha Waterproof casing structure for electronic equipment
EP1276361A3 (en) * 1995-01-27 2003-01-22 Mitsubishi Denki Kabushiki Kaisha Waterproof casing structure for electronic equipment
JP2007116620A (en) * 2005-10-24 2007-05-10 Matsushita Electric Works Ltd Intercom
JP2007124081A (en) * 2005-10-26 2007-05-17 Matsushita Electric Works Ltd Intercom unit
JP4682800B2 (en) * 2005-10-26 2011-05-11 パナソニック電工株式会社 Door phone device

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