【考案の詳細な説明】
本考案は電気機器の接点に関するものであって、主な目
的とするところは接点を流れる電流によって接点同士の
電磁反発力を増長して接点の開極速度を早め、アニソの
発生を抑えて長寿命化を計ることである。[Detailed description of the invention] This invention relates to contacts of electrical equipment, and its main purpose is to increase the electromagnetic repulsion between the contacts by the current flowing through the contacts, thereby increasing the opening speed of the contacts. The purpose is to suppress the generation of aniso and extend the lifespan.
従来、第１図に示すように一対の接触子６，７の各先端
部に接点８，９を装着して、短絡電流のような大電流が
流れた場合には、接触子６，７同士の間の電磁反発力を
利用して接点８，９を高速度で開離できるようにした接
点装置が、例えば実開昭５２−４５１６４号公報におい
て開示されている。Conventionally, as shown in FIG. 1, contacts 8 and 9 are attached to the tips of a pair of contacts 6 and 7, and when a large current such as a short circuit current flows, the contacts 6 and 7 are connected to each other. A contact device capable of opening and closing contacts 8 and 9 at high speed by utilizing the electromagnetic repulsion between them is disclosed, for example, in Japanese Utility Model Application Publication No. 52-45164.
しかしながら、かかる従来例にあっては、接触子６，７
の間には大きな電磁反発力が働くが、接点８，９の間に
はほとんど電磁反発力は働かないという問題があった。However, in such a conventional example, the contacts 6, 7
There was a problem in that a large electromagnetic repulsive force acts between the contacts 8 and 9, but hardly any electromagnetic repulsive force acts between the contacts 8 and 9.
もちろん、かかる従来例にあっても、第２図に示すよう
に、接点８，９は互いの略中央で接触し、しかもその接
触は複数個の点接触となっていて、各接点８，９を流れ
る電流は同図の矢印線で示される電流路Ａ、Ｂ、Ｃを通
ることとなり、両端部の間隙を介して対向する面８，９
では電流が逆方向に流れ、したがってきわめてわずかの
電磁反発力は生じるものであるが、本考案はこの原理を
もっと積極的に利用し、相対向する接点の対向面に流れ
る互いに反対方向の電流路を長くシ、電磁力による反発
力を大きくして接点の開極速度を上昇させるものである
。Of course, even in such a conventional example, as shown in FIG. The current that flows through the current paths A, B, and C shown by the arrow lines in the figure passes through the opposing surfaces 8 and 9 with a gap at both ends.
In this case, the current flows in the opposite direction, resulting in a very slight electromagnetic repulsion, but the present invention makes more active use of this principle and creates current paths in opposite directions that flow on the opposing surfaces of the opposing contacts. This increases the repulsive force caused by electromagnetic force and increases the opening speed of the contact.
以下本考案の構成を図示実施例に基いて詳述する。The configuration of the present invention will be described in detail below based on illustrated embodiments.
第３図に示す実施例では相対向する接点本体１．１の対
向面２，２両端を突出させて接点部３，３を形成し、各
接点本体１の背面略中央に形成した細径部４にて負荷乃
至電源側に電気接続される接触子５と一体に結合して、
細径部４と接点部３との間の接点本体１内に図の矢印線
で示すように互いに逆方向に流れる長い電流路Ｘ、Ｙを
形成し、相対向する接点本体１に各電流路Ｘ、Ｙを流れ
る電流によって発生する電磁反発力が作用して両接点本
体１，１を互いに遠ざけようとし、接点部３，３を開極
される場合は、この力が機械的な外力に加わって接点本
体１，１の開極速度を早めるわけである。In the embodiment shown in FIG. 3, the opposing surfaces 2, 2 of the opposing contact bodies 1.1 are made to protrude to form the contact parts 3, 3, and a narrow diameter part is formed approximately in the center of the back surface of each contact body 1. 4 is integrally coupled with a contact 5 electrically connected to the load or power supply side,
Long current paths X and Y flowing in opposite directions are formed in the contact body 1 between the narrow diameter part 4 and the contact part 3 as shown by the arrow lines in the figure, and each current path is formed in the contact body 1 facing oppositely. When the electromagnetic repulsion force generated by the current flowing through X and Y acts to move the contact bodies 1 and 1 away from each other, and the contact parts 3 and 3 are opened, this force is added to the mechanical external force. This speeds up the opening speed of the contact bodies 1, 1.
第４図に示す実施例では対向面２が平坦となった接点本
体１の対向面２両端に接点部３を固着し、接点本体１の
背面略中央により一体に延出する細径部４に接触子５を
連続させた例を示し、第５図に示す実施例では、各接触
子５端部の細径部４先端より放射状に接点本体１を連出
し、各接点本体１の先端に接点部３を形成した例を示し
、いずれの場合も、各接点本体１内での細径部４と接点
部３との間に形成される電流路Ｘ、Ｙが互いに反対方向
に配向し、この電流路Ｘ、Ｙを流れる電流によって発生
する電磁力が各接点本体１，１を互いに遠ざけるように
作用して接点の開極速度を早めるわけである。In the embodiment shown in FIG. 4, the contact portion 3 is fixed to both ends of the facing surface 2 of the contact body 1 whose facing surface 2 is flat, and attached to a narrow diameter portion 4 extending integrally from approximately the center of the back surface of the contact body 1. An example is shown in which the contacts 5 are connected in a row, and in the embodiment shown in FIG. In each case, the current paths X and Y formed between the narrow diameter portion 4 and the contact portion 3 in each contact body 1 are oriented in opposite directions, and this The electromagnetic force generated by the current flowing through the current paths X and Y acts to move the contact bodies 1 and 1 away from each other, thereby increasing the opening speed of the contacts.
【図面の簡単な説明】[Brief explanation of the drawing]
第１図は従来例を示す正面図、第２図は同上の部分拡大
図、第３図及び第４図は本考案の一実施例を示す正面図
、第５図は本考案の他の実施例を示す斜視図であり、１
は接点本体、２は対向面、３は接点部、４は細径部、５
は接触子である。Fig. 1 is a front view showing a conventional example, Fig. 2 is a partially enlarged view of the same as above, Figs. 3 and 4 are front views showing an embodiment of the present invention, and Fig. 5 is another embodiment of the present invention. FIG. 1 is a perspective view showing an example;
is the contact body, 2 is the opposing surface, 3 is the contact part, 4 is the small diameter part, 5
is a contact.