【考案の詳細な説明】
本考案は、ケース６の天板部分の接点部１上方
を気孔部２とし、気孔部２の上面より下方に向け
て下面に貫通しない複数個の上面穴３を隔設し、
気孔部２の下面より上方に向けて上面に貫通しな
い複数個の下面穴４を隔設し、上面穴３の側壁と
下面穴４の側壁とを開口して互いに連通させてケ
ース６と一体に通気孔５を形成して成る継電器に
係るものであつて、その目的とするところは継電
器内部の換気及び放熱を良くし、接点ばねのよう
な金属部品の腐食を少くすることができ、しかも
ケースを小型化でき、組立ても容易な継電器を提
供するにある。[Detailed description of the invention] The present invention has a hole section 2 above the contact section 1 of the top plate portion of the case 6, and a plurality of upper holes 3 that do not penetrate into the lower surface and are spaced downward from the upper surface of the air hole section 2. established,
A plurality of lower holes 4 that do not penetrate the upper surface are provided upward from the lower surface of the air hole portion 2, and the side walls of the upper hole 3 and the side walls of the lower hole 4 are opened and communicated with each other to be integrated with the case 6. This relates to a relay formed with ventilation holes 5, and its purpose is to improve ventilation and heat dissipation inside the relay, reduce corrosion of metal parts such as contact springs, and further improve the case. The purpose of this invention is to provide a relay that can be miniaturized and easy to assemble.
継電器にあつては、ケースがほぼ密封に近い構
造になつているので、接点及びコイルより発生し
た熱が継電器内部にこもり、継電器の温度が上昇
し、過熱状態となつたり、又直流の誘導負荷の如
くアークの出やすい負荷を開閉した場合にはアー
クにより発生した硝酸物質により接点ばねのよう
な金属部品が激しく腐食されるという問題があ
る。そこでこの硝酸物質や高温ガスを上方から排
出してやることが望まれるがケースの上面を開口
するとその開口から接点部内へほこりが落下する
という新たな問題が生じる。そこで従来は第４図
ａ，ｂに示すような防塵ケース（実公昭51−
16175号公報）が提供されているが、かかる従来
例にあつては多数の孔１１を有する多孔板１２を
重ね合せて孔１１で体心立方構造的に配置させて
おり、上方の孔１１と下方の孔１１とを連通させ
るために多孔板１２間にスペーサ１３を介して多
孔板１２間に空隙層１４を確保して気孔部２′を
形成していた。この空隙層１４の存在のために気
孔部２′を一枚の板状に薄く成形することができ
ず、ケース６′の高さが高くなつて継電器を小型
化できなくなるという欠点があり、また多孔板を
重ね合せて気孔部を組立てねばならず組立て作業
が煩わしくなるという欠点があつた。 Since the case of a relay has a nearly hermetically sealed structure, the heat generated from the contacts and coils is trapped inside the relay, causing the relay's temperature to rise, resulting in overheating, and direct current inductive loads. When opening and closing loads that are prone to arcing, there is a problem in that metal parts such as contact springs are severely corroded by nitric acid generated by the arc. Therefore, it is desirable to exhaust the nitric acid and high-temperature gas from above, but when the top surface of the case is opened, a new problem arises in that dust falls from the opening into the contact portion. Therefore, in the past, a dustproof case (1973-
16175), but in such a conventional example, perforated plates 12 having a large number of holes 11 are stacked and arranged in a body-centered cubic structure with the holes 11, and the upper holes 11 and In order to communicate with the lower hole 11, a void layer 14 is secured between the porous plates 12 with a spacer 13 interposed therebetween, thereby forming a pore portion 2'. Due to the existence of this void layer 14, the pore portion 2' cannot be formed into a thin plate shape, which increases the height of the case 6', making it impossible to downsize the relay. The disadvantage is that the perforated plates must be stacked to assemble the pores, making the assembly work cumbersome.
本考案は叙述の点に鑑みてなされたものであつ
て以下実施例により詳述する。第１図に示すよう
に継電器のケース６にコイル７、接点の開閉を行
う可動片８及び複数個の接点ばね９，９′を内装
し、複数個の接点ばね９，９′より成る接点部１
の上方でケース６に以下のような気孔部２を設け
る。ケース６の上面より下方に向けて下面に貫通
しない複数個の小さな上面穴３を一列に隔設し、
ケース６の下面より上方に向けて上面に貫通しな
い複数個の小さな下面穴４を前記上面穴３と交互
に一列に隔設し、上面穴３の側壁と下面穴４の側
壁を開口して互いに連通し、開口部を小さな通気
孔５とする。上記通気孔５を複数列設けて気孔部
２が構成されている。したがつて上面穴３は底部
が覆われているのでほこりが継電器内部に落下し
ないが、上面穴３の側壁に通気孔５を有し、下面
穴４に連なつているので、換気が行えるようにな
つている。また、第３図に示すように上面穴３の
底部１０にすりばち状の形態を持たせ、一層ほこ
りが継電器内に入りにくく、上面穴３の底部１０
に貯つたほこりが継電器内に落ちにくいようにし
てもよい。 The present invention has been developed in view of the points mentioned above, and will be explained in detail below with reference to Examples. As shown in Fig. 1, a coil 7, a movable piece 8 for opening and closing the contacts, and a plurality of contact springs 9, 9' are housed in the case 6 of the relay, and the contact portion consists of the plurality of contact springs 9, 9'. 1
Above the case 6, the following air holes 2 are provided. A plurality of small upper surface holes 3 that do not penetrate the lower surface are spaced apart in a row downward from the upper surface of the case 6,
A plurality of small bottom holes 4 that do not penetrate the top surface of the case 6 are arranged in a line alternately with the top holes 3, and the side walls of the top holes 3 and the side walls of the bottom hole 4 are opened so that they are mutually connected. The opening is a small ventilation hole 5. The pore section 2 is configured by providing a plurality of rows of the above-mentioned ventilation holes 5. Therefore, since the bottom of the top hole 3 is covered, dust will not fall into the inside of the relay, but the side wall of the top hole 3 has a ventilation hole 5, which is connected to the bottom hole 4, so that ventilation can be carried out. It's getting old. In addition, as shown in FIG. 3, the bottom 10 of the top hole 3 has a cone-like shape, making it even more difficult for dust to enter the relay.
It may be possible to make it difficult for dust accumulated in the relay to fall into the relay.
本考案継電器の叙述の如くケースの天板部分の
接点部上方を気孔部とし、気孔部に上下方向に真
直ぐに貫通しない通気孔をケースと一体に形成し
ているから、アークにより発生した硝酸物質や接
点及びコイルより発生た熱を上昇熱流にのせてそ
の上方の気孔部より外部へ効率良く排出して硝酸
物質による接点ばねや可動片等の金属部品の腐食
を抑え、継電器内部の温度上昇を抑えることがで
き、気孔部を接点部上方に設けたにも拘らず、通
気孔が上下に真直ぐに貫通していないので気孔部
の通気孔から接点部へほこりが落下することがな
く、ほこりの落下による継電器の動作不良やシヨ
ートを防止できるものであり、しかもケースに加
工して通気孔をケースと一体に形成しているの
で、従来例のように通気孔を穿設した板をケース
に嵌め込んだり、組合せたりしたもののように気
孔部の組立て作業の必要がなく、また気孔部の組
立てのためのねじ部や嵌合部もケースに不要であ
つて継電器を一層小型化できるという利点があ
る。また上下に真直ぐに貫通しない通気孔は気孔
部の上面より下面に向けて下面に貫通しない上面
孔を穿設き、気孔部の下面より上方に向けて上面
に貫通しない下面孔を穿設し、上面孔と下面孔の
側壁とを開口して互いに連通させて形成している
から、通気孔を設けた気孔部がケースの天板部分
である一枚板に形成されることになり、気孔部が
薄くてケース自体が小さくなつて、継電器の小型
化を一層進めることができ、また一枚の板である
ために従来例のように気孔部内に面状の空隙層が
生じず、気孔部内に熱や硝酸物質がこもらず、通
気孔からの排出効率が良いという利点がある。 As described in the description of the relay of the present invention, the air hole is formed above the contact point on the top plate of the case, and since the air hole is formed integrally with the case and does not penetrate straight through the air hole in the vertical direction, the nitric acid generated by the arc The heat generated from the contacts and coils is carried on an upward heat flow and efficiently discharged to the outside through the pores above, suppressing corrosion of metal parts such as contact springs and movable pieces due to nitric acid, and reducing the temperature rise inside the relay. Even though the air hole is provided above the contact area, the air hole does not penetrate straight up and down, so dust does not fall from the air hole to the contact area. This prevents the relay from malfunctioning or being shot due to a fall, and since the ventilation hole is formed integrally with the case, it is not necessary to fit a plate with ventilation holes into the case as in the conventional case. There is no need to assemble the air holes, unlike those that are inserted or combined, and there is no need for screws or fitting parts on the case for assembling the air holes, which has the advantage of making the relay even more compact. . In addition, for ventilation holes that do not penetrate straight up and down, an upper surface hole that does not penetrate through the lower surface is formed from the upper surface of the air hole toward the lower surface, and a lower surface hole that does not penetrate through the upper surface is formed upward from the lower surface of the air hole, Since the side walls of the top hole and the bottom hole are opened and communicated with each other, the air hole section with the ventilation hole is formed in a single plate that is the top plate of the case, and the air hole section The case is thinner and the case itself is smaller, making it possible to further downsize the relay.Also, since it is a single plate, there is no planar void layer inside the pores as in the conventional case. It has the advantage of not trapping heat or nitric acid, and has good discharge efficiency from the ventilation holes.
【図面の簡単な説明】[Brief explanation of the drawing]
第１図は本考案継電器の一実施例を示す断面
図、第２図は同上の気孔部の斜視図、第３図は別
な実施例の気孔部の断面図、第４図ａ，ｂは従来
例を示す断面図及び平面図であつて、１は接点
部、２は気孔部、３は上面穴、４は下面穴、５は
通気孔、６はケースである。
Fig. 1 is a sectional view showing one embodiment of the relay of the present invention, Fig. 2 is a perspective view of the pore portion of the same as above, Fig. 3 is a sectional view of the pore portion of another embodiment, and Fig. 4 a and b are 1 is a sectional view and a plan view showing a conventional example, in which 1 is a contact portion, 2 is a hole portion, 3 is a hole on the top surface, 4 is a hole on the bottom surface, 5 is a vent hole, and 6 is a case.