JPH0247735U

JPH0247735U -

Info

Publication number: JPH0247735U
Application number: JP12685788U
Authority: JP
Priority date: 1988-09-27
Filing date: 1988-09-27
Publication date: 1990-04-03

Description

[Brief explanation of drawings]

第１図はこの考案にかかる光電スイツチの一実
施例を分解してあらわしたスイツチ全体図、第２
図は電子部品ブロツクの要部をあらわし、同図ａ
は電子部品ブロツクにコネクタを組み込む様子を
あらわした分解図、同図ｂは光学ブロツクのプリ
ント配線基板と電子部品ブロツクとの結合部分を
あらわした断面図、第３図は同光電スイツチの組
立状態をあらわした断面図、第４図はその―
線断面図、第５図は光学ブロツクの分解斜視図、
第６図は位置検出素子の移動調節の要領をあらわ
した斜視図、第７図はその平面拡大図、第８図は
光学的三角側距法の原理図をあらわした概要図、
第９図は従来の光電スイツチの分解斜視図である
。１０……光学ブロツク本体、１１……投光レン
ズ、１２……受光レンズ、１３……受光素子、１
４……位置検出素子、１４ａ，１４ｂ……端子、
２０……プリント配線基板、２０ａ……配線パタ
ーン、２１……グランドパターン（シールド部分
）、２３……ガイド溝。 Figure 1 is an overall diagram of an exploded photoelectric switch according to this invention;
The figure shows the main parts of the electronic component block.
Figure 3 is an exploded view showing how the connector is assembled into the electronic component block, Figure b is a sectional view showing the connection between the printed wiring board of the optical block and the electronic component block, and Figure 3 shows the assembled state of the photoelectric switch. The cross-sectional view shown in Figure 4 shows that.
A line sectional view, FIG. 5 is an exploded perspective view of the optical block,
FIG. 6 is a perspective view showing how to adjust the movement of the position detection element, FIG. 7 is an enlarged plan view thereof, and FIG. 8 is a schematic diagram showing the principle of the optical triangular distance method.
FIG. 9 is an exploded perspective view of a conventional photoelectric switch. 10... Optical block main body, 11... Light emitting lens, 12... Light receiving lens, 13... Light receiving element, 1
4...Position detection element, 14a, 14b...Terminal,
20... Printed wiring board, 20a... Wiring pattern, 21... Ground pattern (shield portion), 23... Guide groove.

Claims

[Scope of utility model registration request]

The main body of the optical block consists of a light projecting lens that focuses the light beam from the light emitting element and irradiates it in a fixed direction, and a light receiving lens that focuses a part of the light beam that is diffusely reflected by the detection object and makes it enter the position detection element. and the position detection element can be moved and adjusted at the time of setting so that a point on which a reflected light beam from a reference detection position to be set is incident coincides with a specific point of the element, and In the photoelectric switch in which the light emitting element and the position detection element are electrically connected to a printed wiring board provided on the back of the optical block main body, one surface of the printed wiring board serves as a shielding surface against electromagnetism. The other surface has a wiring pattern and is attached to the optical block main body with the shield surface facing the position detection element side which is the light receiving lens side, and the position detection element has a terminal thereof. A photoelectric switch characterized in that the photoelectric switch is mounted by being inserted into the printed wiring board so as to be adjusted in movement and electrically connected to a wiring pattern on the back side of the printed wiring board.