JPS58178919A

JPS58178919A - Contact

Info

Publication number: JPS58178919A
Application number: JP6308882A
Authority: JP
Inventors: 守立野
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1982-04-15
Filing date: 1982-04-15
Publication date: 1983-10-20

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】この発明は、配線用遮＃ｒ器、電磁接触器などに用いら
れる接点に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to contacts used in wiring circuit breakers, electromagnetic contactors, and the like.

従来、この種の接点は、接点性能の向上を図るため、接
点表面の全体が釧また＃′ｉ銀に富んに層によって嘴ら
かな状−で蝋ゎれている。し九がって、接点の開成時に
アークが広がって接点表面からの接点成分の蒸発が多く
、またアークが接点表面のエツジに移動して−か所を集
中的に傷つけたりしていた。そのため、接点の消耗が早
（、また接触不良やアークの４１＃が速やかになされが
いという問題を有していた。Conventionally, in order to improve the contact performance of this type of contact, the entire surface of the contact is waxed with a layer rich in #'i silver in a smooth shape. As a result, when the contact is opened, the arc spreads, causing a large amount of contact components to evaporate from the contact surface, and the arc moves to the edges of the contact surface, causing concentrated damage to the area. As a result, there was a problem in that the contacts wore out quickly (and contact failure and arc 41# were not allowed to occur quickly).

この発明は、このような事情に鑑みなされたもので、縦
、横に複数の溝が形成されており、その溝によって接点
表面が複数の部分に分割されている接点を七〇賛旨とす
るものである。This invention was made in view of the above circumstances, and is directed to a contact in which a plurality of grooves are formed vertically and horizontally, and the contact surface is divided into a plurality of parts by the grooves. It is something.

すなわち、この接点は、接点表面が縦、横（斜。In other words, this contact has vertical and horizontal (diagonal) contact surfaces.

曲線を含む）の溝により分割されているため、その分ｌ
１１１部分においては電界強度が大きくなる。したがっ
て接点成分の蒸発が少なくなり、接点の消耗が遅くなる
。また、接点表面が縦、横の溝により分割されているた
め、アーク柱の太さが小さくなりアークの移動が速やか
になされるようになる。(including curved lines), the corresponding l
The electric field strength increases in the 111 portion. Therefore, the evaporation of contact components is reduced, and the wear of the contacts is slowed down. Furthermore, since the contact surface is divided by vertical and horizontal grooves, the thickness of the arc column is reduced and the arc can move quickly.

なお、電界強度が増加すると、接点蒸発エネルギーが減
少することは、Ｔ−Ｆ理論より明らかである。Note that it is clear from the T-F theory that as the electric field strength increases, the contact evaporation energy decreases.

つぎに、この発明を実施例にもとづいて絆しく総明する
。Next, this invention will be explained in detail based on examples.

図面はこの発明の一実施例の斜視図である。すなわち、
この接点１は、接点表面に＃Ｉ２が格子状に形成されて
いて、＃ｌ１２に囲まれた部分が分割部３となっている
。この＃１２の深さｄは数百μｍＫ設定され、かつ分割
部３は１辺の長さ／　、　／’が数十μｍに設定されて
いる。１．１’は必ずしも等しくはない。＃１幅は数十
μｍである。The drawing is a perspective view of one embodiment of the invention. That is,
This contact 1 has #I2 formed in a grid pattern on the contact surface, and the portion surrounded by #I12 serves as a divided portion 3. The depth d of this #12 is set to several hundred μmK, and the length of one side of the dividing portion 3 is set to several tens of μm. 1.1' are not necessarily equal. #1 width is several tens of μm.

このように、この接点は、婢２の形成により表面が分割
されていて、その分割部３の１辺の長さｌが数十ｆｉｍ
と小さいため、その部分における電界強度が着しく高く
なる。したがって接点８発エネルギーが減少するように
なり、接点の消耗が著しく少なくなる。また、アーク柱
の太さも細くなるため、アークの移動性が良好になる。In this way, the surface of this contact point is divided by the formation of the layer 2, and the length l of one side of the divided portion 3 is several tens of fim.
Since the area is small, the electric field strength at that part becomes extremely high. Therefore, the energy of the eight contact points is reduced, and wear and tear on the contacts is significantly reduced. Furthermore, since the thickness of the arc column becomes thinner, the mobility of the arc becomes better.

なお、ＡｇおよびＡｇ系合金の電流密度は、１０５〜Ｉ
　Ｏ’　Ａ／ｃｍ”であるから、これにより接点表面を
構成しておけば、配線用連断器の電流域に対しては、分
割部３を１辺の長さｌが数十μｍになるように設定する
ことで充分対応できるのである。Note that the current density of Ag and Ag-based alloys is 105 to I
O'A/cm", so if the contact surface is configured in this way, the length l of one side of the dividing part 3 will be several tens of μm for the current range of the wiring disconnector. This can be done by setting the following.

なお、上１溝２の鎌さｄは、５ｏｏμｍ以丁に設定する
ことが効果の点で好ましく、また分割部３の一辺の長さ
７１１１００μｍ未満であればよいのである。Note that the sickle size d of the upper groove 2 is preferably set to 50 μm or more from the viewpoint of effectiveness, and the length of one side of the divided portion 3 may be less than 711100 μm.

以上のように、この発明の接点は、縦、横に複数の溝が
形成されており、その溝によって接点表面が複数の部分
に分割されているため、接点の消耗が着しく少なく、か
つアークの移動性も良好である。As described above, the contact of the present invention has a plurality of grooves formed vertically and horizontally, and the contact surface is divided into a plurality of parts by the grooves, so that wear and tear on the contact is minimized, and the arc The mobility is also good.

[Brief explanation of the drawing]

図面はこの発明の一実施例の斜視図である。ｌ・・・接点　２・・・溝　３・・・分割部特許出願人
　松下電工株式会社The drawing is a perspective view of one embodiment of the invention. l...Contact 2...Groove 3...Divided part Patent applicant Matsushita Electric Works Co., Ltd.

Claims

[Claims]

(1) A contact characterized in that a plurality of grooves are formed vertically and horizontally, and the contact surface is divided into a plurality of parts by the grooves.

(2) A plurality of grooves formed vertically and horizontally are formed in a lattice shape, with a depth of several hundred μm, and one surface of the contact, which is divided by the grooves, is one side of the groove. The contact according to claim 1, which has a size of several tens of μm.