JP2011192658A - Contact switching device - Google Patents

Contact switching device Download PDF

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JP2011192658A
JP2011192658A JP2011149000A JP2011149000A JP2011192658A JP 2011192658 A JP2011192658 A JP 2011192658A JP 2011149000 A JP2011149000 A JP 2011149000A JP 2011149000 A JP2011149000 A JP 2011149000A JP 2011192658 A JP2011192658 A JP 2011192658A
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contact
case
sheet
switching device
fixed
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Osamu Abiko
修 安孫子
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To enable easy joining of a sheet part consisting of a porous material by automation, and prevention of peeling off of the sheet part, while preventing conduction failures of a contact part. <P>SOLUTION: The contact switching device includes a contact part 1, which operates an open and close by a movable contact 9 contacting with and separating from fixed contacts 16a, 17a; and a box state case 2, which houses the contact part 1 in the interior. On the outer face of the case 2 wall part, a plurality of ventilating holes 3b constituted by penetrating through the interior of a case 2 are installed. In the interior of the wall part, the ventilation holes 3b are closed by double molding the sheet part 21, consisting of a porous material having waterproofness and air permeability in the case 2. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、可動接点が固定接点に接触・離間することで開閉動作を行う接点開閉装置に関するものである。   The present invention relates to a contact opening / closing device that performs an opening / closing operation when a movable contact contacts / separates a fixed contact.

従来より、可動接点が固定接点に接触・離間することで開閉動作を行う接点部と、該接点部を内部に収納する箱状のケースとを備えた種々の接点開閉装置が提供されている（例えば、特許文献１参照）。   Conventionally, various contact switching devices including a contact portion that opens and closes when a movable contact contacts and separates from a fixed contact, and a box-shaped case that houses the contact portion inside are provided ( For example, see Patent Document 1).

そして、この様な接点開閉装置は、例えば自動車の車載機器の電子制御ユニット（ＥＣＵ）に広く用いられている。ところで、冬季や寒冷地等の周囲環境温度が低い場合、密封状態のケース内で氷結現象が発生し、接点導通不良を引き起こす問題があった。以下、氷結現象について簡単に説明する。通電によって、ケース内の通電経路を形成する接点及び端子は発熱を起こし、ケース内の温度が上昇する。このとき、外部温度が非常に低ければ、ケースの内外で温度差が生じるので、ケース内壁部周辺の飽和水蒸気量が低下し、ケース内の空気中に含まれる水蒸気が水滴となり、ケース内壁部や接点部に結露が発生する。そして、非通電状態になれば、次第にケース内の温度は外部温度により冷却され、部材表面に付着していた水滴が凍る。この様な氷結現象は、特に、樹脂部材と比べ熱伝導率が高い金属材によって形成される接点部の表面で頻繁に発生する。   Such contact switching devices are widely used, for example, in electronic control units (ECUs) of in-vehicle devices of automobiles. By the way, when the ambient temperature is low, such as in winter or in a cold region, there is a problem that icing phenomenon occurs in a sealed case, resulting in poor contact conduction. Hereinafter, the freezing phenomenon will be briefly described. By energization, the contacts and terminals that form the energization path in the case generate heat, and the temperature in the case rises. At this time, if the external temperature is very low, there will be a temperature difference between the inside and outside of the case, so the amount of saturated water vapor around the case inner wall will decrease, and water vapor contained in the air inside the case will become water droplets, and the case inner wall and Condensation occurs at the contacts. And if it will be in a non-energized state, the temperature in a case will be gradually cooled by external temperature, and the water drop adhering to the member surface will freeze. Such an icing phenomenon frequently occurs particularly on the surface of the contact portion formed by a metal material having a higher thermal conductivity than the resin member.

この氷結現象に対する従来例の一つとして、図５に示すような接点開閉装置がある。この接点開閉装置は、箱状に形成されたケース５０内に接点部（図示せず）が収納されており、ケース５０の壁部（図５では上端部）には、細長矩形状に貫通してなる一対の通気孔５１が設けられている。通気孔５１によってケース５０内部を非密封状態にし、外部への水蒸気の放出や、内外温度の平準化を目的としている。しかし、該接点開閉装置には、通気孔５１を介して、埃や塵等の異物がケース５０内に進入し、前記接点部に付着して氷結現象と同様の接点導通不良を引き起こす問題がある。   One conventional example of this icing phenomenon is a contact switching device as shown in FIG. In this contact switching device, a contact portion (not shown) is accommodated in a case 50 formed in a box shape, and the wall portion (upper end portion in FIG. 5) of the case 50 penetrates in an elongated rectangular shape. A pair of vent holes 51 is provided. The purpose of the vent hole 51 is to make the inside of the case 50 unsealed and to release water vapor to the outside and level the inside and outside temperatures. However, the contact switching device has a problem that foreign matter such as dust or dust enters the case 50 through the vent hole 51 and adheres to the contact portion to cause contact failure similar to the icing phenomenon. .

これに対して、通気孔に有機塗膜を設け、紫外線を照射すれば硬化して通気性を有する多孔質の被膜を形成し、異物の進入を防止することができる接点開閉装置が提供されている（特許文献２参照）。   On the other hand, an organic coating film is provided in the vent hole, and when it is irradiated with ultraviolet rays, it is cured to form a porous coating film having air permeability, and a contact switching device capable of preventing entry of foreign matters is provided. (See Patent Document 2).

この他にも、通気孔に耐水性及び通気性を備える多孔質材（フッ素樹脂材）フィルターを設けた接点開閉装置が提供されている（特許文献３参照）。   In addition, a contact switching device is provided in which a porous material (fluororesin material) filter having water resistance and air permeability is provided in the air hole (see Patent Document 3).

特開２００６−２１０２８９号公報JP 2006-210289 A 特開平１１−１４５６６７号公報JP-A-11-145667 特開平５−２４２７８４号公報JP-A-5-242784

しかしながら、従来の通気孔に有機塗膜を設けた接点開閉装置は、液体を通気孔の穴に直接塗布する必要があるので、液体が垂れたり片寄りしたりする恐れがあり、自動化により均一な膜厚の被膜を形成するのは容易ではない。そして、紫外線照射後、有機塗膜がケース壁部の外面より少しでも突出して硬化すれば、突出部分が他の周辺部品と接触することにより有機塗膜が剥れ落ちる問題もある。また、多孔質材フィルターを設けた接点開閉装置は、該フィルターの取付けに熱硬化性接着剤を使用しており、上述と同様に接着剤が垂れたり片寄りしたりする恐れがある。   However, the conventional contact opening / closing device provided with an organic coating film on the vent hole needs to apply the liquid directly to the hole of the vent hole. It is not easy to form a film having a thickness. And if an organic coating film protrudes and hardens even a little from the outer surface of a case wall part after ultraviolet irradiation, there also exists a problem that an organic coating film will peel off because a protrusion part contacts other peripheral components. Further, the contact switching device provided with the porous material filter uses a thermosetting adhesive for mounting the filter, and there is a possibility that the adhesive may sag or be displaced as described above.

本発明は上記事由に鑑みて為されたものであり、その目的は、接点部の導通不良を防ぎつつ、自動化により多孔質材からなるシート部の接合を容易に行うことができ、且つシート部の剥れ落ちを防止できる接点開閉装置を提供することにある。   The present invention has been made in view of the above-mentioned reasons, and the object thereof is to easily connect a sheet portion made of a porous material by automation while preventing a poor conduction of the contact portion, and to achieve the sheet portion. An object of the present invention is to provide a contact opening / closing device that can prevent peeling of the contact.

請求項１の発明は、上記目的を達成するために、可動接点が固定接点に接触・離間することで開閉動作を行う接点部と、前記接点部を内部に収納する箱状のケースとを備え、前記ケース壁部の外面には、前記ケース内部へ貫通してなる１つ乃至複数の通気孔が設けられ、前記壁部の内部に、耐水性及び通気性を備えた多孔質材からなるシート部を、前記ケースに二重成形することで、前記通気孔が塞がれることを特徴とする。   In order to achieve the above object, a first aspect of the present invention includes a contact portion that opens and closes when a movable contact contacts and separates from a fixed contact, and a box-shaped case that houses the contact portion therein. One or a plurality of vent holes penetrating into the case are provided on the outer surface of the case wall, and the sheet is made of a porous material having water resistance and air permeability inside the wall. The vent is closed by double-molding the part into the case.

この発明によれば、ケース壁部の外面には、前記ケース内部へ貫通してなる１つ乃至複数の通気孔が設けられ、前記壁部の内部に、耐水性及び通気性を備えた多孔質材からなるシート部を、前記ケースに二重成形することで、前記通気孔が塞がれるので、接点部の導通不良を防ぎつつ、一体的に形成することで前記シート部の接合作業の手間が省け、且つ前記シート部の剥れ落ちを防止できる。   According to the present invention, the outer surface of the case wall is provided with one or more ventilation holes penetrating into the case, and the interior of the wall is porous with water resistance and air permeability. By double-molding the sheet portion made of a material into the case, the vent hole is closed, so that the connection work of the sheet portion is troublesome by forming it integrally while preventing conduction failure of the contact portion. Can be omitted, and the sheet portion can be prevented from peeling off.

請求項２の発明は、請求項１の発明において、前記シート部は、フッ素樹脂材によって形成されることを特徴とする。   The invention of claim 2 is characterized in that, in the invention of claim 1, the sheet portion is formed of a fluororesin material.

この発明によれば、前記シート部は、フッ素樹脂材によって形成されるので、埃や塵等の異物のケース内への進入を防ぎつつ、ケース内の水蒸気を外部へ放出させて接点部の導通不良を防ぐことができる。   According to this invention, since the sheet portion is formed of a fluororesin material, the water vapor in the case is discharged to the outside while preventing the entry of foreign matters such as dust and dust into the case, and the contact portion is electrically connected. Defects can be prevented.

本発明では、接点部の導通不良を防ぎつつ、自動化により多孔質材からなるシート部の接合を容易に行うことができ、且つシート部の剥れ落ちを防止できるという効果がある。   In the present invention, there is an effect that the sheet portion made of the porous material can be easily joined by automation and the sheet portion can be prevented from peeling off while preventing the conduction failure of the contact portion.

実施形態１の分解斜視図である。1 is an exploded perspective view of Embodiment 1. FIG. 同上におけるケースを示し（ａ）は上方斜視図で、（ｂ）は下方斜視図である。The case in the above is shown, (a) is an upper perspective view, (b) is a lower perspective view. 同上における要部を示し（ａ）はシート部溶着前の斜視図で、（ｂ）はシート部溶着後の斜視図である。(A) is a perspective view before sheet part welding, and (b) is a perspective view after sheet part welding. 実施形態２の要部断面図である。6 is a cross-sectional view of a main part of Embodiment 2. FIG. 従来の接点開閉装置の一例を示す要部斜視図である。It is a principal part perspective view which shows an example of the conventional contact switching device.

（実施形態１）
以下、実施形態１について、図１〜図３を参照して説明する。尚、以下の説明では、図１において上下左右前後方向を規定している。 (Embodiment 1)
The first embodiment will be described below with reference to FIGS. In the following description, the vertical and horizontal directions are defined in FIG.

本実施形態１の接点開閉装置は、図１に示すように、全体として略直方体形の箱状に形成されるケース２と、ケース２の内部に収納される接点部１とを備え、プリント配線板（図示せず）上に半田接合により実装される。   As shown in FIG. 1, the contact switching device according to the first embodiment includes a case 2 formed as a substantially rectangular parallelepiped box as a whole, and a contact portion 1 accommodated in the case 2. It is mounted on a plate (not shown) by soldering.

ケース２は、図１に示すように、下面が開口した箱型の合成樹脂成形品からなるボディ３と、上面が開口した扁平な箱型に形成されてなるベース４とから構成され、ボディ３をベース４に上方から被せて形成される。   As shown in FIG. 1, the case 2 includes a body 3 made of a box-shaped synthetic resin molded product having an open bottom surface, and a base 4 formed in a flat box shape having an open top surface. Is formed on the base 4 from above.

ボディ３の上壁部の外面には、図１に示すように、矩形状に内側へ窪んでなる凹部３ａが形成され、凹部３ａの内底面には略細長矩形状にケース２内部へ貫通してなる３つの通気孔３ｂが設けられている。ボディ３側壁内側には、全周に亘って外側方向へ向かって窪んでなる係止段部（図示せず）が形成されている。   As shown in FIG. 1, a concave portion 3a that is recessed inward in a rectangular shape is formed on the outer surface of the upper wall portion of the body 3, and the inner bottom surface of the concave portion 3a penetrates into the case 2 in a substantially elongated rectangular shape. Three vent holes 3b are provided. A locking step (not shown) is formed on the inside of the side wall of the body 3 and is recessed outwardly over the entire circumference.

ベース４の内底面には、図１及び図２に示すように、下方へ矩形状に貫通してなる挿通孔４ａが、左右端の前後方向の略中心及び後方の計４箇所に配設され（図１では１箇所のみ図示）、更に左右端の前方には細長矩形状に貫通してなる一対の挿通部４ｂが設けられている。   As shown in FIGS. 1 and 2, insertion holes 4 a penetrating downward in a rectangular shape are disposed on the inner bottom surface of the base 4 at a total of four locations in the approximate center of the left and right ends and the rear. (Only one place is shown in FIG. 1) Further, a pair of insertion portions 4b are provided in front of the left and right ends so as to penetrate in an elongated rectangular shape.

接点部１は、図１に示すように、電磁石５、継鉄６、作動バネ片７、接極子８、可動接点９、ボビン１１及び固定接点部１５から構成される。また、電磁石５は、ボビン１１に巻回された励磁用のコイル１２と、ボビン１１の中心軸に貫通して挿入される鉄芯１３とからなる。   As shown in FIG. 1, the contact portion 1 includes an electromagnet 5, a yoke 6, an operating spring piece 7, an armature 8, a movable contact 9, a bobbin 11, and a fixed contact portion 15. The electromagnet 5 includes an exciting coil 12 wound around the bobbin 11 and an iron core 13 inserted through the central axis of the bobbin 11.

ボビン１１は、図１に示すように、電気絶縁性を有する樹脂材料によって全体が略円筒形状に形成されてなり、胴部１１ａと、胴部１１ａの上下端部に設けられた上鍔部１１ｂ及び下鍔部１１ｃとを一体に備える。胴部１１ａは、円筒形状に形成されてなり、その中心軸には、上下端部に貫通してなる貫通孔１１ｄが設けられている。そして、胴部１１ａの外周面にはコイル１２が巻回され、貫通孔１１ｄには鉄芯１３が挿入される。上鍔部１１ｂは、胴部１１ａ上端部が略コ字型状に形成されてなり、前記コ字の開口する端部は後方を向いている。そして、上鍔部１１ｂには後述の継鉄６の横設部６ａが後方より嵌合される。下鍔部１１ｃは、胴部１１ａ下端部が矩形板状に形成されてなり、更に前記矩形板の前後方向の略中心より前方には、前後端部が開口し、前記矩形板を上側壁とする略角筒形状に形成された筒部が形成されている。下鍔部１１ｃ前方開口の周縁左右端の上下部には、後方へ窪んだ凹部１１ｅが設けられており、凹部１１ｅには後述の固定接点部１５が前方より挿入される。そして、下鍔部１１ｃ左右端の前後方向の略中心部には、下方に延びる一対の端子片１１ｆ（図２にのみ図示）、１１ｇが設けられている。   As shown in FIG. 1, the bobbin 11 is formed in a substantially cylindrical shape as a whole by a resin material having electrical insulation, and has a barrel portion 11 a and upper flange portions 11 b provided at upper and lower ends of the barrel portion 11 a. And the lower collar portion 11c. The trunk portion 11a is formed in a cylindrical shape, and a through hole 11d formed through the upper and lower end portions is provided on the central axis thereof. And the coil 12 is wound around the outer peripheral surface of the trunk | drum 11a, and the iron core 13 is inserted in 11d of through-holes. The upper collar portion 11b has an upper end portion of the body portion 11a formed in a substantially U-shape, and an end portion where the U-shape is open faces rearward. And the horizontal part 6a of the yoke 6 mentioned later is fitted by the upper collar part 11b from back. The lower flange portion 11c has a lower end portion of the body portion 11a formed in a rectangular plate shape. Further, the front and rear end portions are opened in front of the approximate center in the front-rear direction of the rectangular plate, and the rectangular plate is used as an upper side wall. A cylindrical portion formed in a substantially rectangular tube shape is formed. Recessed portions 11e recessed rearward are provided at the upper and lower portions of the peripheral left and right ends of the front opening of the lower collar portion 11c, and a fixed contact portion 15 described later is inserted into the recessed portion 11e from the front. A pair of terminal pieces 11f (shown only in FIG. 2) and 11g extending downward are provided at substantially central portions in the front-rear direction of the left and right ends of the lower collar portion 11c.

鉄芯１３は、円柱形状に形成され、下端部には左右方向の寸法が鉄芯１３の外径より長くした矩形板状の頭部１３ａを備えている。   The iron core 13 is formed in a columnar shape, and has a rectangular plate-shaped head portion 13 a whose left-right dimension is longer than the outer diameter of the iron core 13 at the lower end.

継鉄６は、図１に示すように、矩形板を前後方向略中心で直角に曲折させてなり、水平面に平行な横設部６ａと、横設部６ａの後端部から下方へ延びる起立部６ｂとから構成され、コイル１２の周辺に磁束の磁路を形成する。横設部６ａは、ボビン１１の上鍔部１１ｂに後方開口より挿入し、胴部１１ａ上面及び上鍔部１１ｂによって形成される窪みに嵌合される。また、横設部６ａには貫通穴６ｃが貫設されており、貫通穴６ｃの中心軸は、前記嵌合時に貫通孔１１ｄの中心軸と等しくしている。そして、貫通孔１１ｄから上方に突出される鉄芯１３の上端部が貫通穴６ｃにかしめ固定されることで、継鉄６は鉄芯１３に連結される。一方、鉄芯１３の下端部では、頭部１３ａが下鍔部１１ｃの下面に当接されるので、継鉄６及び鉄芯１３がボビン１１から抜け落ちることはない。起立部６ｂは、コイル１２から離間して、鉄芯１３の中心軸と平行に配置されており、後面には、後方へ突出する３つの突部（図示せず）が設けられている。   As shown in FIG. 1, the yoke 6 is formed by bending a rectangular plate at a right angle about the center in the front-rear direction, and a standing portion extending downward from the lateral portion 6 a parallel to the horizontal plane and the rear end portion of the lateral portion 6 a. The magnetic flux path is formed around the coil 12. The horizontal portion 6a is inserted into the upper flange portion 11b of the bobbin 11 from the rear opening, and is fitted into a recess formed by the upper surface of the trunk portion 11a and the upper flange portion 11b. Moreover, the through hole 6c is penetrated by the horizontal part 6a, and the central axis of the through hole 6c is made equal to the central axis of the through hole 11d at the time of the fitting. Then, the yoke 6 is connected to the iron core 13 by caulking and fixing the upper end portion of the iron core 13 protruding upward from the through hole 11d to the through hole 6c. On the other hand, at the lower end portion of the iron core 13, the head portion 13 a is in contact with the lower surface of the lower collar portion 11 c, so that the yoke 6 and the iron core 13 do not fall off the bobbin 11. The upright part 6b is spaced apart from the coil 12 and is arranged in parallel with the central axis of the iron core 13, and three protrusions (not shown) protruding rearward are provided on the rear surface.

作動バネ片７は、図１に示すように、銅板等の導電性薄板を略Ｌ字状に曲折させてなり、水平面に平行な作動部７ａと、水平面の法線方向に平行な固定部７ｂと、作動部７ａ及び固定部７ｂ間の曲折部分であるヒンジバネ部７ｃとから構成される。作動部７ａは、前方方向に延出されてなり、作動部７ａ上面の後方寄りには接極子８がかしめにより固定されている。作動部７ａ前方端部には、上下方向に貫通してなる孔部が形成され、略球形状に形成された可動接点９が、前記孔部にかしめ固定されており、可動接点９の上下方向の頂部分は、各々後述の固定接点１６ａ、１７ａと対向している。そして、固定部７ｂは、前後方向に貫通してなる３つの穴部７ｄ設けられており、後述の端子板２０とともに継鉄６の起立部６ｂの後面に固定される。このとき、作動部７ａの前方部分は、下鍔部１１ｃの筒部の後方側開口より挿入される。   As shown in FIG. 1, the actuating spring piece 7 is formed by bending a conductive thin plate such as a copper plate into a substantially L shape, and an actuating portion 7a parallel to the horizontal plane and a fixing portion 7b parallel to the normal direction of the horizontal plane. And a hinge spring portion 7c which is a bent portion between the operating portion 7a and the fixed portion 7b. The operating portion 7a extends in the forward direction, and an armature 8 is fixed by caulking near the rear of the upper surface of the operating portion 7a. At the front end of the actuating portion 7a, a hole penetrating in the vertical direction is formed, and the movable contact 9 formed in a substantially spherical shape is caulked and fixed to the hole, and the vertical direction of the movable contact 9 is Are opposed to fixed contacts 16a and 17a described later. And the fixing | fixed part 7b is provided in the three hole parts 7d penetrated in the front-back direction, and is fixed to the rear surface of the standing part 6b of the yoke 6 with the terminal board 20 mentioned later. At this time, the front part of the operation part 7a is inserted from the rear side opening of the cylinder part of the lower collar part 11c.

端子板２０は、作動バネ片７を介して可動接点９と電気的に接続されるコモン端子となるものである。そして、端子板２０は、図１に示すように、導電性を有する板材を打ち抜き、折曲加工することで、コ字状の本体部２０ａと、Ｌ字状の一対の端子片２０ｂとが一体に形成されてなる。本体部２０ａには、前後方向に貫通してなる３つの穴部２０ｃが設けられている。本体部２０ａは、起立部６ｂの３つの突部（図示せず）を穴部７ｄ、２０ｃにかしめることによって、固定部７ｂとともに起立部６ｂ後面に固定される。   The terminal plate 20 serves as a common terminal that is electrically connected to the movable contact 9 via the operating spring piece 7. As shown in FIG. 1, the terminal plate 20 is formed by punching a conductive plate material and bending it so that the U-shaped main body portion 20a and the pair of L-shaped terminal pieces 20b are integrated. Formed. The main body 20a is provided with three holes 20c that penetrate in the front-rear direction. The main body portion 20a is fixed to the rear surface of the upright portion 6b together with the fixing portion 7b by caulking three protrusions (not shown) of the upright portion 6b in the holes 7d and 20c.

接極子８は、図１に示すように、磁性材料によって略矩形板状に形成されてなり、上述の通り作動部７ａ上面の後方寄りに固定されている。また、接極子８の後端部８ａは、左右方向に亘って継鉄６の起立部６ｂの下端部６ｄに当接される。   As shown in FIG. 1, the armature 8 is formed in a substantially rectangular plate shape by a magnetic material, and is fixed to the rear side of the upper surface of the operating portion 7a as described above. Further, the rear end portion 8a of the armature 8 is brought into contact with the lower end portion 6d of the upright portion 6b of the yoke 6 in the left-right direction.

つまり、継鉄６は、作動バネ片７を介して接極子８を上下方向に対して揺動自在に支持している。また、電磁石５、継鉄６、作動バネ片７、接極子８及び可動接点９は互いに協働して、コイル１２による磁気回路を形成する。   That is, the yoke 6 supports the armature 8 through the operating spring piece 7 so as to be swingable in the vertical direction. Further, the electromagnet 5, the yoke 6, the operating spring piece 7, the armature 8 and the movable contact 9 cooperate with each other to form a magnetic circuit by the coil 12.

つまり、継鉄６は、作動バネ片７を介して接極子８を上下方向に対して揺動自在に支持している。また、電磁石５、継鉄６、作動バネ片７、接極子８及び可動接点９は互いに協働して、コイル１２による磁気回路を形成する。   That is, the yoke 6 supports the armature 8 through the operating spring piece 7 so as to be swingable in the vertical direction. Further, the electromagnet 5, the yoke 6, the operating spring piece 7, the armature 8 and the movable contact 9 cooperate with each other to form a magnetic circuit by the coil 12.

固定接点部１５は、図１に示すように、作動バネ片７の上面側で可動接点９と対向する固定接点１６ａを有するノーマリオープン（ＮＯ）固定接点端子板１６と、作動バネ片７の下面側で可動接点９と対向する固定接点１７ａを有するノーマリクローズ（ＮＣ）固定接点端子板１７とからなる。   As shown in FIG. 1, the fixed contact portion 15 includes a normally open (NO) fixed contact terminal plate 16 having a fixed contact 16 a facing the movable contact 9 on the upper surface side of the operating spring piece 7, and the operating spring piece 7. A normally closed (NC) fixed contact terminal plate 17 having a fixed contact 17a facing the movable contact 9 on the lower surface side.

ＮＯ固定接点端子板１６は、導電性材料によって凸型状に形成され、更に右端部が下方に延びてなり、全体として略Ｌ字型状に形成されている。前記凸型状部分の下面中心部には、略半球形状に形成されてなる固定接点１６ａが配設されている。前記凸型状部分の前方左右には突片１６ｂが設けられている。この左右の突片１６ｂが、下鍔部１１ｃの前方上端左右に具備される一対の凹部１１ｅに各々嵌合されることで、ＮＯ固定接点端子板１６が、ボビン１１に固定される。また、右側の突片１６ｂの端部には下方へ延びる端子片１６ｃが設けられている。   The NO fixed contact terminal plate 16 is formed in a convex shape by a conductive material, and further, the right end portion extends downward, and is formed in a substantially L shape as a whole. A fixed contact 16a formed in a substantially hemispherical shape is disposed at the center of the lower surface of the convex portion. Protruding pieces 16b are provided on the front left and right sides of the convex portion. The left and right protruding pieces 16b are respectively fitted into a pair of recesses 11e provided on the left and right front upper ends of the lower flange portion 11c, whereby the NO fixed contact terminal plate 16 is fixed to the bobbin 11. A terminal piece 16c extending downward is provided at the end of the right protruding piece 16b.

ＮＣ固定接点端子板１７は、導電性材料によって凸型状に形成されてなり、更に左端部には下方へ矩形板状に突出される導電性の端子片１７ｃが設けられている。前記凸型状部分の上面中心部には、略半球形状に形成されてなる固定接点１７ａが配設されている。前記凸型状部分の前方左右に具備される突片１７ｂが、下鍔部１１ｃの前方下端左右に具備される一対の凹部１１ｅに各々嵌合されることで、ＮＣ固定接点端子板１７が、ボビン１１に固定される。   The NC fixed contact terminal plate 17 is formed in a convex shape by a conductive material, and further, a conductive terminal piece 17c protruding downward in a rectangular plate shape is provided at the left end portion. A fixed contact 17a formed in a substantially hemispherical shape is disposed at the center of the upper surface of the convex portion. The protrusions 17b provided on the front left and right sides of the convex-shaped part are respectively fitted to the pair of recesses 11e provided on the front lower left and right of the lower collar part 11c, so that the NC fixed contact terminal plate 17 is It is fixed to the bobbin 11.

尚、本実施形態１では、可動接点９が２つの固定接点１６ａ、１７ａに対して接触動作をなす接点切替型のｃ接点に適用したものを例示しているが、接点開閉装置はこの限りでなく、１つの固定接点に対し接離動作をなす常開型ａ接点、常閉型ｂ接点にも適用可能である。   In the first embodiment, the movable contact 9 is applied to a contact switching type c contact that makes contact with the two fixed contacts 16a and 17a. However, the contact switching device is not limited to this. In addition, the present invention can also be applied to a normally open type a contact and a normally closed type b contact that make contact with and separate from one fixed contact.

接点部１をケース２内に収納する際は、図１及び図２に示すように、先ず端子片１１ｆ、１１ｇ及び一対の端子片２０ｂを挿通孔４ａへ、端子片１６ｃ、１７ｃを挿通部４ｂへ差し込み、各端子片をベース４底壁より下方へ突出させて、接点部１をベース４の内底面に載置させる。次に、ベース４の上方からボディ３を被せる。このときボディ３内側の係止段部（図示せず）は、全周に亘ってベース４側壁の上端部に載置される。そして、ボディ３下面開口周縁及びベース４底壁の下面を、熱硬化性樹脂（例えば、エポキシ樹脂）などでシールして組立てられる。本実施形態１の接点開閉装置は、ベース４底壁の下面より突出される端子片１７ｃを除く５つの端子片をスルーホールに挿通し、半田接合することでプリント配線板（図示せず）上に実装される。   When housing the contact portion 1 in the case 2, as shown in FIGS. 1 and 2, first, the terminal pieces 11f and 11g and the pair of terminal pieces 20b are inserted into the insertion hole 4a, and the terminal pieces 16c and 17c are inserted into the insertion portion 4b. The contact piece 1 is placed on the inner bottom surface of the base 4 by projecting each terminal piece downward from the bottom wall of the base 4. Next, the body 3 is covered from above the base 4. At this time, a locking step (not shown) inside the body 3 is placed on the upper end of the side wall of the base 4 over the entire circumference. Then, the body 3 lower surface opening peripheral edge and the lower surface of the base 4 bottom wall are sealed and assembled with a thermosetting resin (for example, epoxy resin). In the contact switching device of the first embodiment, five terminal pieces excluding the terminal piece 17c protruding from the lower surface of the bottom wall of the base 4 are inserted into the through holes and soldered to form a printed circuit board (not shown). To be implemented.

次に、本実施形態１の接点開閉装置の基本動作について説明する。   Next, the basic operation of the contact switching apparatus according to the first embodiment will be described.

コイル１２に電流が流れていない場合、電磁石５は非励磁状態であり、接極子８は鉄芯１３の頭部１３ａから離間した位置にある。即ち、可動接点９が接触する接点は、固定接点１７ａである。   When no current flows through the coil 12, the electromagnet 5 is in a non-excited state, and the armature 8 is at a position separated from the head 13 a of the iron core 13. That is, the contact with which the movable contact 9 contacts is the fixed contact 17a.

この状態からコイル１２に電流が流れると電磁石５は励磁され、接極子８は、電磁石５の吸引力により、作動バネ片７の弾性復帰力に抗して、後端部８ａを支点に上方へ変位し鉄芯１３の頭部１３ａに吸着する。この吸着動作にともない、可動接点９は、作動バネ片７の作動部７ａを介して、接極子８と一体となって上方へ変位する。即ち、可動接点９が接触する接点は、固定接点１７ａから固定接点１６ａに切り替えられる。   When current flows through the coil 12 from this state, the electromagnet 5 is excited, and the armature 8 moves upward with the rear end portion 8a as a fulcrum against the elastic return force of the operating spring piece 7 by the attractive force of the electromagnet 5. Displaced and attracted to the head 13a of the iron core 13. With this suction operation, the movable contact 9 is displaced upward together with the armature 8 via the operating portion 7 a of the operating spring piece 7. That is, the contact point with which the movable contact 9 contacts is switched from the fixed contact point 17a to the fixed contact point 16a.

その後、コイル１２に流れる電流が切れると電磁石５は消磁され、電磁石５の吸引力は消失するので、接極子８は、作動バネ片７の弾性復帰力により、前記吸着方向と反対の下方向へ変位し、鉄芯１３の頭部１３ａから離間する。この離間動作にともない、可動接点９は、作動バネ片７の作動部７ａを介して、接極子８と一体となって下方へ変位する。即ち、可動接点９が接触する接点は、固定接点１６から固定接点１７ａに切り替えられる。   Thereafter, when the current flowing through the coil 12 is cut off, the electromagnet 5 is demagnetized and the attractive force of the electromagnet 5 disappears. Therefore, the armature 8 is moved downward in the direction opposite to the attracting direction by the elastic return force of the operating spring piece 7. Displaces and moves away from the head 13 a of the iron core 13. With this separation operation, the movable contact 9 is displaced downward together with the armature 8 via the operating portion 7 a of the operating spring piece 7. That is, the contact point with which the movable contact 9 comes into contact is switched from the fixed contact 16 to the fixed contact 17a.

この様に電磁石５が励磁・消磁を繰り返すことによって、可動接点９が対向する固定接点１６ａ、１７ａに対して接離動作を行い、接点の切替がなされる。   Thus, when the electromagnet 5 repeats excitation and demagnetization, the movable contact 9 performs contact / separation operation with the fixed contacts 16a and 17a facing each other, and the contacts are switched.

次に、本実施形態１の接点開閉装置の要旨について説明する。   Next, the gist of the contact switching apparatus according to the first embodiment will be described.

従来技術で述べた様に、冬季や寒冷地等の周囲環境温度が低い場合、密封状態のケース内では、氷結現象の発生による接点部の導通不良を起こす。因って、本実施形態１の接点開閉装置でも従来例と同様に、ボディ３上壁部の外面には、ケース２内部へ貫通してなる３つの略細長矩形状の通気孔３ｂが設けられている。但し、本実施形態１のボディ３上壁部の外面には、矩形状に内側へ窪んでなる凹部３ａが設けられ、この凹部３ａの内底面に、前述の通気孔３ｂが配設されている。   As described in the prior art, when the ambient temperature is low, such as in winter or in a cold region, in the sealed case, a contact failure occurs due to the occurrence of a freezing phenomenon. Therefore, also in the contact switching device of the first embodiment, three substantially elongated rectangular vent holes 3b penetrating into the case 2 are provided on the outer surface of the upper wall portion of the body 3 as in the conventional example. ing. However, on the outer surface of the upper wall portion of the body 3 of the first embodiment, a concave portion 3a that is recessed inward in a rectangular shape is provided, and the above-described vent hole 3b is disposed on the inner bottom surface of the concave portion 3a. .

そして、図１及び図３（ａ）に示すように、凹部３ａ周縁の前後左右方向寸法と等しくした矩形状のシート部２１が、凹部３ａに嵌め込こまれ、３つの通気孔３ｂが塞がれる。このシート部２１は、耐水性及び通気性を備えた多孔質材（例えば、フッ素樹脂材）から形成されており、通気孔３ｂを介して、埃や塵等の異物がケース２内に進入するのを防ぐとともに、外部への水蒸気の放出や、内外温度の平準化を行うことができる。尚、シート部２１の厚さ寸法は、凹部３ａの窪み寸法より小さくする必要がある。   As shown in FIGS. 1 and 3 (a), a rectangular sheet portion 21 having the same size as the front and rear, left and right dimensions of the periphery of the recess 3a is fitted into the recess 3a, and the three air holes 3b are closed. It is. The sheet portion 21 is formed of a porous material (for example, a fluororesin material) having water resistance and air permeability, and foreign matters such as dust and dust enter the case 2 through the air holes 3b. It is possible to prevent water vapor and to discharge water vapor to the outside and level the internal and external temperatures. In addition, the thickness dimension of the sheet | seat part 21 needs to be made smaller than the hollow dimension of the recessed part 3a.

嵌め込まれたシート部２１は、図２及び図３（ｂ）に示すように、レーザー溶着によって凹部３ａの内底面に接合される。即ち、レーザー光をボディ３上壁部の上方からシート部２１の周縁に沿って照射することで接合される。因って、接点部１の導通不良を防ぎつつ、自動化によるシート部２１の接合を容易に行うことができる。また、凹部３ａの内底面にシート部２１が接合されているので、シート部２１が他の周辺部品等と接触して剥れ落ちるのを防ぐことができる。   As shown in FIGS. 2 and 3B, the fitted sheet portion 21 is joined to the inner bottom surface of the recess 3a by laser welding. That is, it joins by irradiating a laser beam along the periphery of the sheet | seat part 21 from the upper direction of the body 3 upper wall part. Therefore, it is possible to easily join the sheet portion 21 by automation while preventing the conduction failure of the contact portion 1. Moreover, since the sheet | seat part 21 is joined to the inner bottom face of the recessed part 3a, it can prevent that the sheet | seat part 21 contacts and other peripheral components etc. and falls off.

（実施形態２）
以下、実施形態２について、図４を参照して説明する。尚、本実施形態２は、基本的な構成が実施形態１と共通であるので、共通の構成要素には、同一の符号を付して説明を省略する。 (Embodiment 2)
Hereinafter, Embodiment 2 will be described with reference to FIG. Since the basic configuration of the second embodiment is the same as that of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

実施形態１では、凹部３ａの内底面に、シート部２１をレーザー溶着によって接合させて、通気孔３ｂを塞いでいた。本実施形態２では、図４に示すように、ケース２の成形時に、シート部２１をケース２に二重成形することで通気孔３ｂを塞ぐ点に特徴がある。尚、実施形態１と異なり、凹部３ａを設けずに直接通気孔３ｂがボディ３上壁部の外面に貫設されている。因って、接点部１の導通不良を防ぎつつ、シート部２１とボディ３とを一体的に形成することで、接合作業の手間を省くことができる。また、シート部２１が他の部品等と接触して剥れ落ちるのを防ぐことができる。   In the first embodiment, the sheet portion 21 is joined to the inner bottom surface of the recess 3a by laser welding to block the vent hole 3b. As shown in FIG. 4, the second embodiment is characterized in that when the case 2 is molded, the air hole 3 b is blocked by double-molding the sheet portion 21 into the case 2. In addition, unlike Embodiment 1, the vent hole 3b is directly penetrated by the outer surface of the upper wall part of the body 3, without providing the recessed part 3a. Therefore, the trouble of joining work can be saved by forming the seat part 21 and the body 3 integrally while preventing the conduction failure of the contact part 1. Further, the sheet portion 21 can be prevented from coming off due to contact with other components.

１ 接点部
２ ケース
３ ボディ
３ａ 凹部
３ｂ 通気孔
４ ベース
９ 可動接点
１６ａ 固定接点
１７ａ 固定接点
２１ シート部 DESCRIPTION OF SYMBOLS 1 Contact part 2 Case 3 Body 3a Recess 3b Vent hole 4 Base 9 Movable contact 16a Fixed contact 17a Fixed contact 21 Sheet part

Claims (2)

可動接点が固定接点に接触・離間することで開閉動作を行う接点部と、前記接点部を内部に収納する箱状のケースとを備え、前記ケース壁部の外面には、前記ケース内部へ貫通してなる１つ乃至複数の通気孔が設けられ、前記壁部の内部に、耐水性及び通気性を備えた多孔質材からなるシート部を、前記ケースに二重成形することで、前記通気孔が塞がれることを特徴とする接点開閉装置。   A contact portion that opens and closes when the movable contact contacts and separates from the fixed contact, and a box-shaped case that accommodates the contact portion therein, and the outer surface of the case wall portion penetrates into the case. One or a plurality of vent holes are provided, and a sheet part made of a porous material having water resistance and air permeability is formed inside the wall part by double molding on the case, thereby A contact switching device characterized in that a pore is closed. 前記シート部は、フッ素樹脂材によって形成されることを特徴とする請求項１記載の接点開閉装置。   The contact switching device according to claim 1, wherein the sheet portion is made of a fluororesin material.
JP2011149000A 2011-07-05 2011-07-05 Contact switching device Pending JP2011192658A (en)

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JP2008201070A Division JP4811435B2 (en) 2008-08-04 2008-08-04 Contact switchgear

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Cited By (1)

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WO2017073398A1 (en) * 2015-10-28 2017-05-04 アンデン株式会社 Electromagnetic relay

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JPH05242784A (en) * 1992-02-28 1993-09-21 Matsushita Electric Works Ltd Magnetic relay
JP2005203290A (en) * 2004-01-19 2005-07-28 Daiichi Denki Kk Small-sized relay
JP2005323442A (en) * 2004-05-07 2005-11-17 Sumitomo Wiring Syst Ltd Electric connection box for automobile

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Publication number Priority date Publication date Assignee Title
JPH05242784A (en) * 1992-02-28 1993-09-21 Matsushita Electric Works Ltd Magnetic relay
JP2005203290A (en) * 2004-01-19 2005-07-28 Daiichi Denki Kk Small-sized relay
JP2005323442A (en) * 2004-05-07 2005-11-17 Sumitomo Wiring Syst Ltd Electric connection box for automobile

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017073398A1 (en) * 2015-10-28 2017-05-04 アンデン株式会社 Electromagnetic relay
JP2017084613A (en) * 2015-10-28 2017-05-18 アンデン株式会社 Electromagnetic relay
CN108140512A (en) * 2015-10-28 2018-06-08 安电株式会社 Electromagnetic relay
CN108140512B (en) * 2015-10-28 2019-12-13 安电株式会社 Electromagnetic relay
US10679812B2 (en) 2015-10-28 2020-06-09 Anden Co., Ltd. Electromagnetic relay

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