JPH0330867U

JPH0330867U -

Info

Publication number: JPH0330867U
Application number: JP9085189U
Authority: JP
Priority date: 1989-07-31
Filing date: 1989-07-31
Publication date: 1991-03-26

Description

[Brief explanation of drawings]

第１図乃至第４図は本考案の実施例を示し、第
１図は一部切欠分解斜視図、第２図は下ケースの
平面図、第３図はコイルを巻装した状態の第２図
の−線断面図、第４図は要部の断面図、第５
図は従来例の断面図である。１０……ボビンケース、１０Ａ……上ケース、
１０Ｂ……下ケース、１１……係合突部、１２…
…係合溝部、１４……マグネツト、１７……コイ
ル、１８……指針軸、２１……指針、２２……ダ
ンパオイル、２６……連通路、２８……パツキン
部材。 Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a partially cutaway exploded perspective view, Figure 2 being a plan view of the lower case, and Figure 3 showing the lower case with the coil wound thereon. Figure 4 is a sectional view of the main part, Figure 5 is a sectional view taken along the line -
The figure is a sectional view of a conventional example. 10...Bobbin case, 10A...Upper case,
10B...lower case, 11...engaging protrusion, 12...
...Engaging groove portion, 14... Magnet, 17... Coil, 18... Pointer shaft, 21... Pointer, 22... Damper oil, 26... Communication path, 28... Packing member.

Claims

[Scope of utility model registration request]

A bobbin case made of synthetic resin is divided into an upper case and a lower case, and the upper case and lower case pivotally support a pointer shaft that penetrates the magnet, and the magnet is rotatably housed in the bobbin case. damper oil is injected into the bobbin case, coils that intersect with each other are wound around the outer periphery of the bobbin case, and the magnet is directed in the direction of a composite magnetic field generated according to the amount of current flowing through the coils. In the movable magnet type instrument, an annular engagement protrusion is provided on one mating surface of the upper case and the lower case, and an engagement groove into which the engagement protrusion is fitted is provided on the other side. A movable magnet type instrument, characterized in that a communication path communicating with the outside is provided in the engagement groove, and a packing member is poured into the engagement groove and the communication path through the communication path.