JPH01110367U

JPH01110367U -

Info

Publication number: JPH01110367U
Application number: JP469688U
Authority: JP
Priority date: 1988-01-20
Filing date: 1988-01-20
Publication date: 1989-07-25

Description

[Brief explanation of the drawing]

第１図及び第２図は、本考案によるブラシレス
回転検出器を示すための断面図、第３図は従来の
回転検出器を示す断面図である。１はケーシング、２はステータ、４は回転軸、
４ａは軸孔、５はロータ、６は回転トランス用ス
テータ、６ｂは鍔部、７は回転トランス用ロータ
、７ｂは鍔部、８は回転検出部、９は回転トラン
ス部、１０は突部、Ｗ_１，Ｗ_２は肉厚、Ｌ_１，Ｌ
_２は全長である。 1 and 2 are cross-sectional views showing a brushless rotation detector according to the present invention, and FIG. 3 is a cross-sectional view showing a conventional rotation detector. 1 is a casing, 2 is a stator, 4 is a rotating shaft,
4a is a shaft hole, 5 is a rotor, 6 is a stator for a rotary transformer, 6b is a flange, 7 is a rotor for a rotary transformer, 7b is a flange, 8 is a rotation detection portion, 9 is a rotary transformer, 10 is a protrusion, W ₁ and W ₂ are wall thicknesses, L ₁ and L
₂ is the total length.

Claims

[Claims for Utility Model Registration] (1) A rotation detecting section 8 consisting of a stator 2 provided on a casing 1 and a rotor 5 provided on a rotating shaft 4, and a stator 6 for a rotating transformer provided on the casing 1. and a rotary transformer section 9 comprising a rotor 7 for a rotary transformer provided on the rotary shaft 4, the rotor 7 for a rotary transformer is formed on a flange portion 6b of the stator 6 for a rotary transformer. The projecting part 10 has a wall thickness _W2 larger than the wall thickness _W1 of the flange part 7b, and even if the rotating shaft 4 shifts in the axial direction, the total axial length _L2 of the rotary transformer rotor 7 is provided. is the total axial length L of the rotary transformer stator 6
A brushless rotation detector characterized in that the brushless rotation detector is located within ₁ . (2) A rotation detecting section 8 consisting of a stator 2 provided on the casing 1 and a rotor 5 provided on the rotating shaft 4; In a brushless rotation detector consisting of a rotary transformer section 9 comprising a rotor 7 for a rotary transformer, the thickness of the rotor 7 formed on the flange 7b of the stator 6 for the rotary transformer is greater than the thickness of the flange 6b of the stator 6 for the rotary transformer. Even if the rotary shaft 4 is axially displaced, the total axial length of the rotary transformer stator 6 is located within the axial total length of the rotary transformer rotor 7. A brushless rotation detector characterized by: (3) The rotating shaft 4 has a shaft hole 4a formed in the axial direction, and is constructed in a built-in type.
The brushless rotation detector according to item 1 or 2.