JPH033175U

JPH033175U -

Info

Publication number: JPH033175U
Application number: JP6188389U
Authority: JP
Priority date: 1989-05-30
Filing date: 1989-05-30
Publication date: 1991-01-14

Description

[Brief explanation of drawings]

第１図〜第３図は本考案の各実施例を示す縦断
正面図、第４図は従来例を示す縦断正面図である
。Ｋ……可動部、１……可動軸、４……ケーシン
グ、５……巻枠、６……コイル、７……コア、１
０ａ_１，１０ａ_２……貫通孔、１１ａ，１１ｂ…
…縦溝、１１ｃ，１１ｄ……貫通孔、Ａ〜Ｄ……
空間部。 1 to 3 are longitudinal sectional front views showing each embodiment of the present invention, and FIG. 4 is a longitudinal sectional front view showing a conventional example. K... Movable part, 1... Movable shaft, 4... Casing, 5... Winding frame, 6... Coil, 7... Core, 1
0a ₁ , 10a ₂ ... through hole, 11a, 11b ...
...Vertical groove, 11c, 11d...Through hole, A~D...
Space department.

Claims

[Scope of claims for utility model registration] 1. A winding frame with a U-shaped cross section and a hollow cylindrical body;
The coil is housed in the outer periphery of the body of the winding frame, and the movable part is fixed to the center of the bottom of the winding frame through a movable shaft; supported by one end of this movable shaft via a bearing. The end cover and the casing connected thereto cover one end of the movable part and separate it from the space, and the other end of the movable shaft is equipped with a permanent magnet on the outer periphery supported via a bearing. In a moving coil type linear motor in which the remaining part of the movable part is covered with a space by a core having a U-shaped cross section, one or more axial penetrations are provided at the bottom of the winding frame. A moving coil type linear motor characterized in that a hole is formed. 2. A winding frame with a U-shaped cross section and a hollow cylindrical body;
The coil is housed in the outer periphery of the body of the winding frame, and the movable part is fixed to the center of the bottom of the winding frame through a movable shaft; supported at one end of this movable part via a bearing. An end cover and a casing connected thereto cover one end of the movable shaft while separating it from the space, and a permanent magnet is provided on the inner periphery of the casing, while the other end of the movable shaft is provided with a permanent magnet. In a moving coil type linear motor, the remaining part of the movable part is covered with a space by a core having a U-shaped cross section supported through a bearing, and one piece is attached to the bottom of the winding frame. Alternatively, a moving coil type linear motor characterized in that a plurality of axial through holes are formed. 3. The moving coil type linear motor according to claim 1 or 2, wherein one or more longitudinal grooves in the axial direction are formed on the outer periphery of the permanent magnet. 4. The moving coil type linear motor according to claim 1, 2 or 3, wherein one or more longitudinal grooves in the axial direction are formed on the inner circumferential surface of the bearing holding portion that supports the core. 5. The movable device according to claim 1, 2, 3, or 4, wherein a through hole is formed from the outer circumferential surface of the core to the inner circumferential surface of the core so that each space CD of the outer circumferential portion and the inner circumferential portion of the core communicate with each other. Coil type linear motor.