JPH0252246U

JPH0252246U -

Info

Publication number: JPH0252246U
Application number: JP13164988U
Authority: JP
Priority date: 1988-10-07
Filing date: 1988-10-07
Publication date: 1990-04-16

Description

[Brief explanation of the drawing]

第１図および第２図はそれぞれ本考案の一実施
例を示し、第１図は電流目盛表示装置の説明図、
第２図は電流調整ダイヤルを示し、第２図Ａはそ
の斜視図、第２図Ｂおよび第２図Ｃはそれぞれ正
面図であり、第３図および第４図はそれぞれ従来
装置を示し、第３図は熱形過負荷継電器の要部断
面図、第４図Ａ，Ｂはそれぞれ電流調整ダイヤル
および表示板の正面図である。１：ヒートエレメント、４：電流調整ダイヤル
、９：熱形過負荷継電器、９１：チエツク装置、
９３：レーザ発生装置。 1 and 2 each show an embodiment of the present invention, and FIG. 1 is an explanatory diagram of a current scale display device;
FIG. 2 shows a current adjustment dial, FIG. 2A is a perspective view thereof, FIGS. 2B and 2C are front views, respectively, FIGS. 3 and 4 respectively show a conventional device, and FIGS. FIG. 3 is a sectional view of the main part of the thermal overload relay, and FIGS. 4A and 4B are front views of the current adjustment dial and display board, respectively. 1: Heat element, 4: Current adjustment dial, 9: Thermal overload relay, 91: Check device,
93: Laser generator.

Claims

[Scope of utility model registration request]

The heat-type heating element includes a bimetal, a heat element wound around the bimetal, a contact mechanism that is operated according to the curvature of the heat element, and a current adjustment dial that sets the current value flowing through the heat element. In the load relay, the current adjustment dial is formed of resin, the rated current and number of poles of the heat element are checked by a check device, and the laser beam from the laser generator is adjusted to the current adjustment dial according to the output from the check device. A current scale display device for a thermal overload relay, characterized in that a current value and scale are engraved on the surface of a current adjustment dial by directly irradiating the surface.