JPH0326945U

JPH0326945U -

Info

Publication number: JPH0326945U
Application number: JP8827789U
Authority: JP
Priority date: 1989-07-26
Filing date: 1989-07-26
Publication date: 1991-03-19

Description

[Brief explanation of drawings]

第１図はこの考案にかかる反射型検知装置の一
実施例を構成する光学ブロツクをあらわし、同図
ａは斜視図、同図ｂは部分側面図、第２図は同光
学ブロツクの分解斜視図、第３図は組み立て後の
光学ブロツクをあらわし、同図ａは正面図、同図
ｂは側面図、第４図は同反射型検知装置をケーシ
ングに組み込んだ状態であらわす断面図、第５図
はカムの他の実施例をあらわす側面図、第６図は
リブ状の補強部を有するカムをあらわす正面図、
第７図は斜めリブを有するカムをあらわす要部断
面図、第８図は受光用レンズホルダーの変形の可
能性のある個所をあらわす正面図、第９図は同側
面図、第１０図は光学筒の変形の可能性のある個
所をあわわす側面図、第１１図は従来の反射型検
出装置の一例を主要部においてあらわし、同図ａ
は斜視図、同図ｂは部分側面図、第１２図は同カ
ムのみをあらわす正面図、第１３図は同カムの変
形する様子をあらわす正面図、第１４図は同カム
の螺旋方向中間部分も変形する様子をあらわす正
面図である。１ａ，１ｂ……投光用ブロツク、２，１０……
固定側、３ａ，３ｂ……受光用ブロツク、９……
バネ（付勢する手段）、１３ｃ……突起、１６，
２６，３６……カム、１６ｂ，２６ｂ，３６ｂ…
…カム面、１６ｃ，２６ｃ，３６ｃ，３６ｄ……
補強部。 Fig. 1 shows an optical block constituting an embodiment of the reflective detection device according to this invention, Fig. 1a is a perspective view, Fig. 2b is a partial side view, and Fig. 2 is an exploded perspective view of the optical block. , FIG. 3 shows the optical block after assembly, FIG. 6 is a side view showing another embodiment of the cam, and FIG. 6 is a front view showing a cam having a rib-shaped reinforcing portion.
Fig. 7 is a cross-sectional view of the main part showing a cam with diagonal ribs, Fig. 8 is a front view showing parts where the light receiving lens holder may be deformed, Fig. 9 is a side view of the same, and Fig. 10 is an optical Fig. 11 is a side view showing the parts where the cylinder may be deformed, and Fig. 11 shows the main part of an example of a conventional reflective detection device;
is a perspective view, FIG. FIG. 1a, 1b... Light projection block, 2, 10...
Fixed side, 3a, 3b...Light receiving block, 9...
Spring (biasing means), 13c... protrusion, 16,
26, 36...cam, 16b, 26b, 36b...
...Cam surface, 16c, 26c, 36c, 36d...
Reinforcement part.

Claims

[Claims for Utility Model Registration] 1. A light projecting optical system that emits light toward a detectable area and a light receiving optical system that receives light reflected by a detected object in the detectable area, In the reflection type detection device, the detectable area is made closer or closer by changing the distance between the optical system for light emitting and the optical system for light receiving; and a light-receiving block that accommodates the light-receiving optical system, and one of these blocks is assembled in such a manner that it can be spaced apart from or near the other block, and one of the blocks is assembled so that it can be spaced apart from or near the other block. The two blocks are always biased in one direction, and an adjusting means is provided between the one block and the fixed side, and the adjusting means is provided on the one block. a rotatable fixed-side cam that is a cylindrical body and has a spiral cam surface on its outer periphery that the projection engages from the forward direction of the urging; The reflection type detection device is characterized in that a reinforcing portion is provided with the cam surface as an upper surface and a portion below the cam surface projecting in the circumferential direction. 2. A protruding cam part whose upper surface is a cam surface is formed on the outer periphery of the cam surface, and a rib-shaped reinforcing part extending downward from the protruding rim is provided on the outer periphery of the cam. 2. The reflective detection device according to claim 1.