JPH0313977U

JPH0313977U -

Info

Publication number: JPH0313977U
Application number: JP6902290U
Authority: JP
Priority date: 1990-06-28
Filing date: 1990-06-28
Publication date: 1991-02-13
Also published as: JPH0325743Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の断面図、第２図は
第１図のセクシヨンの拡大断面図、第３図は第
１および第２図に示された実施例の一部の分解斜
視図、第４図は本考案の他の実施例の断面図、第
５図は本考案のさらに他の実施例の断面図、第６
図は本考案の他の実施例の一部の斜視図である。１…垂直全回転かま、２…外かま、３…内かま
、４…ボビンケース、５…軌条、６…軌溝、８，
８ｂ，９，９ａ，９ｂ，１０，１０ａ，１０ｂ，
１２，１３，１３ａ，１３ｂ，１４…永久磁石片
、１１…突部、２０，２１…凹溝。 Figure 1 is a sectional view of one embodiment of the present invention, Figure 2 is an enlarged sectional view of the section in Figure 1, and Figure 3 is an exploded perspective view of a portion of the embodiment shown in Figures 1 and 2. 4 is a sectional view of another embodiment of the present invention, FIG. 5 is a sectional view of still another embodiment of the present invention, and FIG. 6 is a sectional view of another embodiment of the present invention.
The figure is a perspective view of a part of another embodiment of the present invention. 1...Vertical full rotation hook, 2...Outer hook, 3...Inner hook, 4...Bobbin case, 5...Rail, 6...Rail groove, 8,
8b, 9, 9a, 9b, 10, 10a, 10b,
12, 13, 13a, 13b, 14...Permanent magnet piece, 11...Protrusion, 20, 21...Concave groove.

Claims

[Claims for Utility Model Registration] A protrusion 11 that protrudes outward in the radial direction and extends in the circumferential direction is formed on the outer peripheral surface of the inner hook 3. The rail 5 includes a pair of first and second permanent magnet pieces 12 and 14 fixed to both sides in the axial direction, and a third permanent magnet piece 13 fixed to the outer peripheral surface of the protrusion 11. The inner peripheral surface of the rotary hook 2 includes a first groove 20 that is recessed outward in the radial direction and extends in the circumferential direction;
A second groove 21 is formed which is further recessed outward in the radial direction than the first groove 20 and extends in the circumferential direction.
A pair of fourth and fifth permanent magnet pieces 8, 10 are fixed to the first and second permanent magnet pieces 12, 14, respectively, facing each other at intervals d1, d3.
A sixth permanent magnet piece 9 facing the third permanent magnet piece 13 at a distance d2 is fixed to the second groove 21 to form a rail 6, and the first, second, and third permanent magnet pieces 12
, 14, 13 and the fourth, fifth, and sixth permanent magnet pieces 8, 10, 9 are magnetized so as to mutually generate magnetic repulsion.