JPH0184015U

JPH0184015U -

Info

Publication number: JPH0184015U
Application number: JP1987179893U
Authority: JP
Priority date: 1987-11-26
Filing date: 1987-11-26
Publication date: 1989-06-05

Description

[Brief explanation of the drawing]

第１図はこの考案にかかるロータリーエンコー
ダの全体を示す断面図、第２図は斜視図、第３図
はスリーブの斜視図、第４図は締め付け具の斜視
図、第５図は調芯機構を説明する概略断面図、第
６図は側面図、第７図および第８図は各々スリー
ブの変更例の斜視図、第９図は締め付け具の止め
ねじ付近を示す変更例の要部断面図、第１０図は
中実軸型ロータリーエンコーダの連結構造を示す
概略構造図、第１１図は中空軸型ロータリーエン
コーダの連結構造を示す概略構造図、第１２図は
従来例の断面図、第１３図は連結個所の横断面図
である。１０……中空入力軸、１１……内部軸孔、１２
……凹テーパ面、１３……めねじ部、１６……小
径部、２０……スリーブ、２１……凸テーパ面、
３０……締め付け具、３１……おねじ部、３２…
…凹テーパ面、ｍ……被検出軸。 Fig. 1 is a sectional view showing the entire rotary encoder according to this invention, Fig. 2 is a perspective view, Fig. 3 is a perspective view of the sleeve, Fig. 4 is a perspective view of the fastener, and Fig. 5 is the centering mechanism. 6 is a side view, FIGS. 7 and 8 are perspective views of modified examples of the sleeve, and FIG. 9 is a sectional view of essential parts of the modified example showing the vicinity of the set screw of the fastener. , FIG. 10 is a schematic structural diagram showing a connecting structure of a solid shaft type rotary encoder, FIG. 11 is a schematic structural diagram showing a connecting structure of a hollow shaft type rotary encoder, FIG. 12 is a sectional view of a conventional example, and FIG. The figure is a cross-sectional view of the connection location. 10...Hollow input shaft, 11...Internal shaft hole, 12
...Concave tapered surface, 13...Female thread portion, 16...Small diameter portion, 20...Sleeve, 21...Convex tapered surface,
30...Tightening tool, 31...Male thread part, 32...
...Concave tapered surface, m...Detected axis.

Claims

[Claims for Utility Model Registration] (1) In a hollow shaft type rotary encoder that converts the rotation of a hollow input shaft into which a detected shaft is inserted into an electrical signal, the hollow input shaft has a small diameter at the back of its internal shaft hole. The stepped portion between the small diameter portion and the internal shaft hole is formed in a concave tapered surface centered on the axis of the hollow input shaft, and the inner circumferential surface of the entrance portion of the internal shaft hole A sleeve is formed in the internal shaft hole, and a sleeve is inserted into the internal shaft hole, the outer circumferential surfaces of both ends of which are formed into convex tapered surfaces with the shaft center of the sleeve as the center of the internal shaft hole. A fastening tool is screwed into the inner shaft, and the distal end surface is formed into a concave tapered surface with its own axis as the axis, and the outer circumferential surface thereof is a male thread. By pressing against the concave tapered surface of the hole, the convex tapered surfaces at both ends of the sleeve are pressed by the internal shaft hole and each concave tapered surface of the fastener, reducing the diameter of the detected shaft inserted into the sleeve. A centering structure of a hollow shaft rotary encoder, characterized in that the centering of the rotary encoder is performed. (2) An alignment structure for a hollow shaft rotary encoder according to claim 1, wherein the hollow input shaft is provided with a set screw for fixing a fastener. (3) Utility model registration claims paragraph 1 or 2 in which the sleeve is provided with an axial slit
Alignment structure of the hollow shaft rotary encoder described in .