JPS6147693U

JPS6147693U - sliding radius arm compass

Info

Publication number: JPS6147693U
Application number: JP13280184U
Authority: JP
Inventors: 和昭川上
Original assignee: 富士電機株式会社
Priority date: 1984-08-31
Filing date: 1984-08-31
Publication date: 1986-03-31

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

[Brief explanation of the drawing]

第１図ないし第４図は本考案によるスライド半 ′，
径腕式コンパスの実施例を示し、第１図はその一実施例
を示す一部断面正面図、第２図は第１図の平面図、第３
図はコンパスの第１図と異なる曲面への取付構造の実施
例を示す正面断面図、第４図は第１図と異なる半径腕の
実施例を示す正面図、第５図は従来の管材への円のケガ
キ方法の一例を示す斜視図、第６図および第７図は従来
の曲面への円のケガキ方法の第５図と異なる例を示し、
第６図は正面図、第７図は平面図である。１・・・管材、３・・・コンパスの中心軸、３ａ・・・
中心軸のつば、７・・・マグネットチャック、８・・・
上下スライド片、１０・・・半径腕、１２・・・半径ス
ライド片、１５・・・ケガキ軸、１６・・・線引具ホル
ダ、１７・・・線引具。Figures 1 to 4 show the slide half according to the present invention;
Fig. 1 is a partially sectional front view showing one embodiment of the diameter arm type compass, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is a plan view of Fig. 1.
The figure is a front sectional view showing an example of the mounting structure for the compass on a curved surface, which is different from that shown in Figure 1. Figure 4 is a front view showing an example of the radius arm that is different from that shown in Figure 1. 6 and 7 are perspective views showing an example of a method for marking a circle on a curved surface, and FIG. 7 shows an example different from FIG. 5 of a conventional method for marking a circle on a curved surface,
FIG. 6 is a front view, and FIG. 7 is a plan view. 1... Tube material, 3... Central axis of compass, 3a...
Center shaft collar, 7...Magnetic chuck, 8...
Upper and lower slide pieces, 10... Radius arm, 12... Radius slide piece, 15... Marking shaft, 16... Line drawing tool holder, 17... Line drawing tool.

Claims

[Scope of utility model registration request]

(1) A compass for marking a circle on a curved surface,
a central shaft installed perpendicularly to the curved surface; a vertical slide piece that is fitted onto the central shaft and rotates around the central axis and slides downward; A fixed radius arm, a radius slide piece that slides on the radius arm and is fixed at an arbitrary position, and a radius slide piece that is arranged parallel to the central axis, one end of which is fixed to the radius slide piece, and a required scribing tool attached to the other end. A slide radius arm type con/gus characterized by being equipped with an attached marking shaft.

(2) The sliding radius arm type compass described in the first claim of the utility model registration is characterized in that the center shaft provided with a center shaft leaf is inserted into a hole provided at the center of a marked circle on a curved surface to be installed. A sliding radius arm type compass.

(3) Utility Model Registration The sliding radius arm type compass according to claim 1, wherein the central shaft is attached by a magnetic chuck fixed to one end thereof.

(4) Utility Model Registration The slide radius arm type compass as set forth in claim 1, wherein the scribing shaft is provided with a line drawing tool holder, and any line drawing tool can be attached to the slide radius arm type compass.