JPH0421178U

JPH0421178U -

Info

Publication number: JPH0421178U
Application number: JP5999690U
Authority: JP
Priority date: 1990-06-06
Filing date: 1990-06-06
Publication date: 1992-02-21

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例としての電動機を示
す断面図、第２図は同じくその平面図、第３図は
第１図のインデツクス検出機構部分の拡大図、第
４図は同じくインデツクス検出機構部分の平面図
、第５図は本考案の他の実施例を示すインデツク
ス検出機構部分の断面図、第６図は従来の電動機
の断面図、第７図は同じく従来の電動機の側面図
、第８図は従来の異なる電動機を示す平面図であ
る。図において、１は回転軸、３は固定子、６はコ
イル、７はロータケース、９は回転子、１０は駆
動用永久磁石、１１は窓、１２はインデツクス検
出素子、１３はホルダ、１５は歯列、１６は支持
突起、１８は調整孔である。なお、図中同一符号
は、同一又は相当部分を示す。 Fig. 1 is a sectional view showing an electric motor as an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged view of the index detection mechanism portion of Fig. 1, and Fig. 4 is the same as that of the index detection mechanism. 5 is a sectional view of an index detection mechanism showing another embodiment of the present invention; FIG. 6 is a sectional view of a conventional electric motor; FIG. 7 is a side view of a conventional electric motor; FIG. 8 is a plan view showing a different conventional electric motor. In the figure, 1 is a rotating shaft, 3 is a stator, 6 is a coil, 7 is a rotor case, 9 is a rotor, 10 is a permanent magnet for driving, 11 is a window, 12 is an index detection element, 13 is a holder, and 15 is The tooth row, 16 is a support protrusion, and 18 is an adjustment hole. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

It has a rotatably supported rotating shaft and a ring-shaped driving permanent magnet that generates magnetic force in the radial direction.
A rotor that rotates integrally with the rotating shaft, and a stationary device placed outside the rotor that is wound with a plurality of coils and that generates rotational force on the rotor through magnetic interaction with the driving permanent magnet. In an electric motor equipped with a rotor and an index detection mechanism for detecting the position of the rotor, the index detection element constituting the index detection mechanism is arranged such that the position of the index detection element constituting the index detection mechanism can be adjusted from the outside. An electric motor characterized by being held on the inner diameter side of a magnet.