JPH0183248U

JPH0183248U -

Info

Publication number: JPH0183248U
Application number: JP1987179870U
Authority: JP
Priority date: 1987-11-26
Filing date: 1987-11-26
Publication date: 1989-06-02

Description

[Brief explanation of the drawing]

第１図は本考案一実施例の断面図、第２図は同
上の分解斜視図、第３図ａ，ｂは同上の要部断面
図、第４図ａ，ｂは同上の動作説明図、第５図は
従来例の側面図、第６図は他の従来例の側面図で
ある。Ａは開閉装置、Ｂは電磁装置、１は励磁コイル
、２は鉄芯、３はヨーク、４は可動鉄片、５は復
帰ばね、６はコイルばね部、７ａ，７ｂは引つ掛
け部、８ａ，８ｂは引掛係合部、１１は係合段部
である。 FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, FIGS. 3 a and b are sectional views of essential parts of the same, and FIGS. FIG. 5 is a side view of a conventional example, and FIG. 6 is a side view of another conventional example. A is a switchgear, B is an electromagnetic device, 1 is an excitation coil, 2 is an iron core, 3 is a yoke, 4 is a movable iron piece, 5 is a return spring, 6 is a coil spring part, 7a and 7b are hook parts, 8a , 8b is a hook engagement portion, and 11 is an engagement stepped portion.

Claims

[Scope of utility model registration request]

One end of the iron core around which the excitation coil is wound is connected to the horizontal piece of the L-shaped yoke to form a U-shaped magnetic circuit, and one end is rotatably attached to the tip of the vertical piece of the yoke. The center part of a movable iron piece whose free end can freely engage with a latch release lever of a circuit breaker switching device is made to be able to be attracted to the other end of the iron core, and a return spring is interposed between the movable iron piece and the yoke. In an electromagnetic device for a circuit breaker, a return spring is configured by extending both ends of a coil spring part in the axial direction and forming a U-shaped hook part at the tip, and the return spring is made of a movable iron piece. The first hook is disposed along the yoke and has one hook part of the return spring at the tip of the vertical piece of the yoke.
At the same time, the other hook part is hooked to a second hook engaging part provided on the free end of the movable iron piece, and the coil spring part of the return spring is attached to one end of the movable iron piece. An electromagnetic device for a circuit breaker, characterized in that an engaging stepped portion is formed to engage with one end surface of the circuit breaker.